A structural joint is provided that includes a first component, a second component, an isolator and a fastener. The isolator is engaged with and between the first component and the second component. The isolator includes a plurality of internal cavities between the first component and the second component. The fastener projects out of the first component, through the isolator and into the second component.
A spring-loaded ball valve includes a spring, a first pin, a second pin, and a handle. The spring is configured to apply pressure to the first pin and second pin when the ball valve is in both the fully open and fully closed positions. The spring applies maximum torque when the ball valve is in the fully open or fully closed position to ensure the valve remains in the fully open or fully closed position.
F16K 5/06 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
F03G 1/02 - Spring motors characterised by shape or material of spring, e.g. helical, spiral, coil
F16F 1/14 - Torsion springs consisting of bars or tubes
F16F 3/04 - Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs
F16K 31/56 - Mechanical actuating means without stable intermediate position, e.g. with snap action
Discussed herein are devices, systems, and methods for Bayesian neural network (BNN) training using mini-batch particle flow. A method for training a Bayesian neural network (BNN) using batched inputs and operating the trained BNN can include initializing particles such that each particle individually represents pointwise values of respective NN parameters of NNs and such that the particles collectively represent a distribution of parameters of the BNN, optimizing, using min-batch training particle flow, the particles based on batches of inputs, resulting in optimized distributions for the parameters, determining a prediction distribution using the optimized distributions for the parameters and predictions from each of the NNs, and providing a marginalized distribution representative of the prediction distribution.
Discussed herein are devices, systems, and methods for training and operating a Bayesian neural network (BNN). A method can include initializing particles that each individually represent pointwise values of respective NN parameters of NNs that collectively represent a distribution of parameters of the BNN, optimizing, using training particle flow, the particles resulting in optimized distributions for the parameters, determining a prediction distribution using the optimized distributions for the parameters and predictions from each of the NNs, and providing a marginalized distribution representative of the prediction distribution.
An assembly comprises a first subassembly, a second subassembly, and a conductive grounding element. The first subassembly comprises a first module comprising a first ground plane and a first conductive region in operable communication with the first ground plane. The second subassembly comprises a second module comprising a second ground plane distinct from the first ground plane and a second conductive region in operable communication with the second ground plane. The first and second subassemblies attach to each other along a seam. The conductive grounding element comprises an electrically conductive material including a first portion disposed adjacent to the first conductive region and a second portion disposed adjacent the second conductive region. The conductive grounding element is configured to fill one or more gaps in the seam and to operably couple together the first and second ground planes of the first and second subassemblies into a third common ground plane.
A warning receiver includes an anamorphic lens positioned to receive light within a field-of-view (FOV) defined by first and second angles that are orthogonal to each other and compress the light along the first orthogonal angle into a single line along the second orthogonal angle. A dispersive element is positioned to separate the single line of light into a plurality of wavelengths to produce a two-dimensional light field indexed by the second orthogonal angle and wavelength. A pixelated detector is positioned to receive the light field and readout electrical signals indexed by the second orthogonal angle and wavelength. A processor coupled to the pixelated detector process the electrical signals to detect and characterize an optical source within the FOV.
G01S 7/48 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group
G01S 7/481 - Constructional features, e.g. arrangements of optical elements
Methods and apparatus for a frequency selective limiter (FSL) having a magnetic material substrate that tapers in thickness and supports a transmission line that has segments and bends. The segments, which differ in width and are substantially parallel to each other, such that each segment traverses the substrate on a constant thickness of the substrate.
A modular radar system comprises an antenna assembly, a support structure to which the antenna assembly is mounted, and a set of modular radar subsystems. The antenna assembly comprises an antenna array, an antenna enclosure to which the antenna array is attached and which is configured to house the antenna array and to distribute communications signals and power signals to the antenna array, and an antenna enclosure interface configured to receive inputs to and provide outputs from, the antenna array. The support structure positions the antenna array at an orientation and elevation for antenna operation. The set of modular radar subsystems is separate from the support structure and in operable communication with the antenna enclosure interface and comprises a data processing subsystem, a cooling subsystem, and an AC power subsystem supplying power to the antenna enclosure, the data processing subsystem, the cooling subsystem and to a DC power conversion subsystem.
G01S 7/00 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , ,
G01S 7/02 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group
H01Q 3/26 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture
H01Q 3/30 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture varying the phase
Discussed herein are devices, systems, and methods for organ mask generation. A device, system and method for organ mask generation including generating a synthetic centroid mask, identifying first and second intensity thresholds, in a first segmentation pass, setting (i) pixels of an image with intensities less than the first threshold to zero and (ii) pixels of the image corresponding to objects with centroids outside the synthetic centroid mask to zero, resulting an initial organ mask, in a second segmentation pass, setting pixels (i) with intensities less than the second threshold, the second threshold less than the first threshold to zero and (ii) setting pixels corresponding to objects with centroids outside the initial organ mask to zero, resulting in a second organ mask, and expanding and filling the second organ mask to generate an organ mask.
Systems and methods for mapping location and characteristics about wireless emitters are described, optionally including traffic participants, such as to allow for tracking geolocation or velocimetry information in real-time. The systems and methods advantageously use correlative receivers for observing the emissions from the wireless emitters without decrypting or decoding information included in the emissions from the wireless emitters to allow for tracking location and emitter class and type in real-time. The real-time geolocation and emitter class information for many receivers in a geographic area can be determined and overlaid on a map or used in autonomous vehicle navigation applications and useful for reducing computational burdens associated with tracking locations of many multiple emitters using direct sensor measurements.
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
11.
CONNECTOR MAP AND ASSEMBLY AID SOFTWARE FOR CABLE MANUFACTURING
A system for creating a wiring guide graphic comprising a database configured to receive inputs of a connector body identity, an engineering specification and a wiring table; and a processor coupled to the sensor, the processor configured to create a wiring guide graphic.
H01R 43/26 - Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for engaging or disengaging the two parts of a coupling device
12.
LOW SWAP APERTURE FOR DIRECTION FINDING ACROSS EXTREME WIDE BAND
A wideband direction finding (WBDF) aperture employs a limited number of extreme wideband end-fire antenna elements capable of covering a wide frequency bandwidth. Arranging variable sized antenna elements in a specific pattern, the WBDF aperture enables direction finding capability covering an extreme wide frequency band. The pattern arrangement of variable sized elements offers the signal discernment to limit ambiguities in signal angle of arrival. This small form factor design enables the WBDF aperture to be mounted on the surface of a missile, munition, or small UAS wing or fuselage. The WBDF aperture offers a combination of differing sized antenna elements arranged in a specific pattern, combined with direction finding and signal tracking to provide an unambiguous relative azimuth and elevation angle of the target.
G01S 7/02 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group
13.
MITIGATING STRONG NONGAUSSIAN INTERFERENCE IN SS RECEIVERS
Systems, devices, methods, and computer-readable media for spread spectrum (SS) receiver interference mitigation are presented. An interference mitigation unit can include an interference analyzer that receives a complex-valued signal and estimates statistical characteristics of at least a portion of the complex-valued signal, a unit controller that receives the estimated statistical characteristics from the interference analyzer, classifies the interference distribution based on statistical characteristics as a Gaussian, long-tail, or short-tail, selects a non-linearity for that distribution, and a programmable non-linear module that performs a non-linear functional conversion of an envelope of the received complex-valued signal using a non-linear input-output characteristic based on the classification by the unit controller.
An example system includes a dynamo-electric machine. The dynamo-electric machine includes a rotor that is cylindrical and that is configured for rotation and a stator that is arranged relative to the rotor. The stator has a stepped configuration that defines a first diameter for the stator and a second diameter for the stator. The first diameter is greater than the second diameter. Zones of the stator at the first diameter hold direct-axis (D-axis) windings and zones of the stator at the second diameter hold quadrature axis (Q-axis) windings. An airgap between the rotor and the Q-axis windings is greater than an airgap between the rotor and the D-axis windings.
H02K 3/12 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
H02K 3/16 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots for auxiliary purposes, e.g. damping or commutating
H02K 3/47 - Air-gap windings, i.e. iron-free windings
H02K 7/02 - Additional mass for increasing inertia, e.g. flywheels
Discussed herein are devices, systems, and methods for beam generating device management. A method can include producing a directed electromagnetic beam, receiving a first message from a second beam generating device, and implementing a first machine learning (ML) model that operates on the received first message to determine a next objective to be completed by the beam generating circuitry.
H04B 7/06 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
16.
SYSTEMS AND METHODS FOR INTERSENSOR SATELLITE CALIBRATION
An apparatus and method of intersensor calibration including using a zero airmass response constant proportional to sensor absolute radiometric gain coefficients to monitor sensor radiometric stability. Tracking the ratio of zero airmass response constant values for similar bands between two sensors provides a parameter on a common radiometric scale for evaluating interoperability performance. The method includes imaging a solar signal using a mirror to create an image reference target, detecting the image reference target using a first sensor, generating a zero airmass response constant based on a ground sampling distance of the first sensor and an at-sensor radiance value, computing a radiometric gain coefficient of the first sensor using the zero airmass response constant, and comparing the radiometric gain coefficient of the first sensor to a radiometric gain coefficient of a second sensor to determine a gain ratio between the first sensor and second sensor.
A joint (10) between dissimilar thermoplastic materials comprising a first thermoplastic material layer (12); a second thermoplastic material layer (14) having a melting point temperature (B) different from a melting point temperature (A) of the first thermoplastic material layer (12); and an interface layer (16) coupled between the first thermoplastic material layer (12) and the second thermoplastic material layer (14); wherein the interface layer (16) is configured to join the first thermoplastic material layer (12) and the second thermoplastic material layer (14) together to form the joint (10), wherein the interface layer (16) comprises a melting point temperature having a value selected from the group consisting of between the melting point temperature (A) of the first thermoplastic material layer (12) and the melting point temperature (B) of the second thermoplastic material layer (14); or lower than the melting point temperature (A) of the first thermoplastic material layer (12) and the melting point temperature (B) of the second thermoplastic material layer (14).
C08J 5/12 - Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives
B29C 65/02 - Joining of preformed parts; Apparatus therefor by heating, with or without pressure
B32B 7/10 - Interconnection of layers at least one layer having inter-reactive properties
B32B 27/06 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance
An assembly is provided for an electric system. This electric system assembly includes an electric cable and a seal element. The seal element circumscribes and is configured integral with the electric cable. The seal element is configured from or otherwise includes a conductive polymer composite material.
A shortwave to midwave infrared (SWIR-MWIR) optical window includes a substrate formed from a nanocomposite optical ceramic material and a coating disposed on the substrate to provide electromagnetic interference (EMI) protection. The coating is electrically conductive and SWIR-MWIR transparent and comprises a doped zinc oxide material. A method of protecting an EO/IR sensor from electromagnetic interference (EMI) includes depositing a thin film electrically conductive and SWIR-MWIR transparent coating over a surface an optical window of the EO/IR sensor. The optical window is formed from a nanocomposite optical ceramic material and has a curved surface. The thin film electrically conductive and SWIR-MWIR transparent coating comprises an electrically conductive zinc oxide material.
The present disclosure sets forth a system for integrating key access control of a plurality of legacy lockable articles into a tool control system. The system can comprise a plurality of lock boxes each associated with a respective legacy lockable article. Each of the plurality of lock boxes can be configured to selectively lock and unlock access to a key operable to facilitate access to the respective legacy lockable article. The system can further comprise a programmable logic controller communicatively coupled to each of the plurality of lock boxes. The programmable logic controller can be operable to send control instructions to the plurality of lock boxes to lock or unlock access to the key.
A reservoir for use in a thermal management system includes a first housing joined to a second housing along a split surface that defines an internal volume. The first and second housings are asymmetric about the split surface and retain a periphery of the barrier, which divides the internal volume into a first volume and a second volume. A first port communicates with the first volume, and a second port communicates with the second volume. A working fluid contained within the reservoir can be expelled by discharging gas from a pressurized source through the first port and into the reservoir, displacing the barrier towards the second port. The working fluid expelled from the reservoir cools an electronics module before discharging from a vehicle.
Methods and apparatus for inspecting an underwater vehicle. In embodiments, a system receives a SAR image for at least a portion of an exterior surface of an underwater vehicle and performs CCD processing to compare a baseline SAS image for the underwater vehicle with the received SAR image of the underwater vehicle to generate a CCD output corresponding to a measure of similarity of the baseline SAS image and the received SAS image. The system determines whether there was tampering of the underwater vehicle based on the measure of similarity.
G01S 7/52 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group
G01S 15/89 - Sonar systems specially adapted for specific applications for mapping or imaging
Methods and apparatus for reducing vibration for an acoustic array. In an embodiment, an acoustic array includes a base structure having apertures and sensors supported by the base structure for providing an acoustic array. Vibration damping material is located in the apertures of the base structure and attachment mechanisms for secure the portions of vibration damping material to a vehicle. A mold material encapsulates the base structure, the sensors and the portions of vibration damping material. The structure and materials are selected to dampen vibration for certain frequencies.
G10K 11/00 - Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
H01Q 1/04 - Adaptation for subterranean or subaqueous use
24.
HIGH PERFORMANCE COMPOSITES FOR UNDERWATER APPLICATIONS
An underwater structure includes a half cylinder with ribs arranged on an interior surface. The half cylinder and the ribs are a semi-monocoque structure including a fiber reinforced thermoplastic composite.
B63B 73/72 - Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by using moulds; Moulds or plugs therefor characterised by plastic moulding, e.g. injection moulding, extrusion moulding or blow moulding
The present disclosure sets forth a rigid, self-aligning radio frequency ("RF") connector comprising a rigid body with a first connection end and a second connection end opposite the first connection end. The RF connector can also comprise a recess disposed on an outer surface of the rigid body between the first and second connection ends, and a collapsible connector support that can comprise a connection portion and a collapsible portion. The collapsible connector support can be disposed within and protrude from the recess while also being configured to collapse into the recess. The collapsible connector support can also be configured to interface with an interfacing surface to facilitate generation of a reaction force sufficient to support the RF connector in an offset position relative to the interfacing surface and to nominally align the RF connector with a device to be connected.
H01R 13/631 - Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure for engagement only
H01R 24/54 - Intermediate parts, e.g. adapters, splitters or elbows
H01R 13/24 - Contacts for co-operating by abutting resiliently mounted
26.
PROCESS FOR APPLICATION OF OXYHYDROXIDES COATING FOR ALUMINUM CONTAINING MATERIAL
A process for providing a surface of aluminum containing materials with a chromate-free protective coating includes degreasing a surface of an aluminum containing material to produce a degreased surface, treating the degreased surface in a high alkaline treatment immediately subsequent to the degreasing to produce an alkaline treated surface having smut on the surface, and treating the alkaline treated smut surface with a hydrothermal treatment immediately subsequent to the high alkaline treatment.
C23C 22/66 - Treatment of aluminium or alloys based thereon
C23C 22/73 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
A system includes a first slice (101) and a second slice (102, 103) coupled to each other. Each slice includes a housing (110) formed of an electrically-insulative material, a ceramic plate (130) disposed at each end of the housing, and an end plate (135) disposed over each of the ceramic plates. Each end plate is formed of a thermally-conductive material. The system also includes a backplane assembly (120) coupled to the first slice and the second slice.
An electrical nut assembly for coupling an electrical lug to an electrical post is disclosed. The electrical nut assembly comprises a compression fitting and a compression sleeve. The compression fitting comprises a material comprising a first yield strength and comprises an internal thread operable to electrically couple to the electrical post and a base surface configured to electrically couple to the electrical lug. The compression sleeve comprises a material comprising a second yield strength greater than the first yield strength and is sized to at least partially cover the compression fitting. The compression sleeve is configured to compress the compression fitting in a radial direction when fitted at least partially over the compression fitting and pressed or advanced axially towards the base surface and as the compression fitting makes contact with the electrical lug.
An apparatus includes a surface acoustic wave (SAW) sensor (100). The SAW sensor includes a piezoelectric substrate (102). The SAW sensor also includes first and second interdigitating transistors (104a-104b) over the piezoelectric substrate. The first interdigitating transistor (104a) is configured to convert an input electrical signal into an acoustic wave. The second interdigitating transistor (104b) is configured to convert the acoustic wave into an output electrical signal. The piezoelectric substrate is configured to transport the acoustic wave. The SAW sensor further includes a detection layer (116) over the piezoelectric substrate and positioned at least partially between the first and second interdigitating transistors. The detection layer includes (i) antibodies (302) configured to bind to one or more biological analytes and (ii) a hydrogel layer (306) over the antibodies.
A connector retention clip (101) is disclosed. The connector retention clip (101) can include a connector housing (110) having a plurality of connector walls (111a-e) defining a connector opening (112) operable to receive a coupled receptacle and plug connector (104) therein. The plurality of connector walls (111a-e) can include a receptacle end wall (111c) and a plug end wall (111d) operable to extend about ends of the receptacle (102) and plug (103), respectively, to provide a mechanical barrier preventing uncoupling of the coupled receptacle and plug connector (104). In addition, the connector retention clip (101) can include a cable housing (120) extending from the connector housing (110). The cable housing (120) can have at least one cable wall (121a-c) defining a cable opening (122) operable to receive a cable (105) therein that extends from the coupled receptacle and plug connector (104).
A separable component assembly (100) is disclosed. The separable component assembly can include a first component (110) having a first interface portion (111). The separable component assembly can also include a second component (120) coupled to the first component. The second component can have a second interface portion (121). In addition, the separable component assembly can include a seal (130) disposed between the first and second interface portions. The seal can have a first interface surface (131) associated with the first interface portion. The seal can also have a second interface surface (132) in contact with the second interface portion. Additionally, the seal can have a peel initiator (133a, 133b) defining a discontinuity in a portion of the second interface surface. Upon separation of the first and second components from one another, the discontinuity can create a stress concentration in the second interface surface that initiates peeling of the second interface surface away from the second interface portion.
F16J 15/02 - Sealings between relatively-stationary surfaces
F16J 15/3284 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
F16J 15/06 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
F16J 15/08 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
F16J 15/10 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
F16L 23/22 - Flanged joints characterised by the sealing means the sealing means being rings made exclusively of a material other than metal
An electrically operated propellant includes a perchlorate oxidizer and a water insoluble polymeric binder with a water solubility of less than 0.1 grams (g) per 100 grams water at 25°Celsius (°C). The electrically operated propellant is substantially waterless with a water content of less than 10 weight % (wt.%) water based on total weight of the electrically operated propellant.
C06B 45/04 - Compositions or products which are defined by structure or arrangement of component or product comprising solid particles dispersed in solid solution or matrix
C06B 45/10 - Compositions or products which are defined by structure or arrangement of component or product comprising solid particles dispersed in solid solution or matrix the solid solution or matrix containing an organic component the organic component containing a resin
C06D 5/06 - Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets by reaction of two or more solids
33.
MOVABLE SIGHT FRAME ASSEMBLY FOR A WEAPON SIMULATOR
A sight frame assembly for a weapon simulator includes one or more connection arms. The connection arms are for slidably coupling the sight frame assembly to the weapon simulator. The connection arms include a passageway for slidably receiving a guide rod that is attached to a sight frame assembly mounting point on the weapon simulator. A spring is positioned in proximity to the guide rod. The sight frame assembly is disposed in a first position along a longitudinal axis of the weapon simulator when the spring is in an uncompressed state, and the sight frame assembly is disposed in a second position along the longitudinal axis of the weapon simulator when the spring is in a compressed state.
A deployment module according to the present application enables both compact stowage of a sensor array and expansion of the sensor array into a three-dimensional volumetric array shape that enables improved directionality of the sensors during operation. The deployment module includes a support shell that is configured to retain a cable of the sensor array separately from sensors of the sensor array and an expandable deployment body formed of a superelastic shape memory alloy that uses superelasticity and stored energy for deployment of the sensor array. During deployment, the deployment body is removed from the support shell and the sensors are subsequently pulled out of the support shell. The deployment body then expands and holds the cable to retain the three-dimensional volumetric shape of the deployed array.
F03G 7/06 - Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying, or the like
G01V 1/20 - Arrangements of receiving elements, e.g. geophone pattern
G01V 1/38 - Seismology; Seismic or acoustic prospecting or detecting specially adapted for water-covered areas
G10K 11/00 - Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
35.
ACTIVELY-CONTROLLED POWER TRANSFORMER AND METHOD FOR CONTROLLING
A transformer (100, 200, 300, 500) includes a magnetic core (102) having multiple limbs (104-106). The transformer also includes a direct current (DC) bias winding (110) wound around a specified one of the limbs. The transformer further includes a DC amplifier (112) electrically connected to the DC bias winding. The DC amplifier is configured to receive a first signal (114) associated with a load output current or voltage. The DC amplifier is also configured to determine an amount of a current for the DC bias winding based on the first signal. The DC amplifier is further configured to send the determined amount of current through the DC bias winding.
A method includes receiving (1002) request information obtained from an external user (107). The request information is associated with a task to be completed by at least one satellite asset among a plurality of satellite assets (121-125), where the satellite assets are grouped into a plurality of constellations (131-133) and each of the constellations is associated with a corresponding scheduler among a plurality of schedulers (111-113). The method also includes assigning (1004) the task to a queue (231). The method further includes determining (1006) at least one specified scheduler to schedule the task at the at least one satellite asset. In addition, the method includes sending (1008) instructions to the at least one specified scheduler for performing the task by the at least one satellite asset.
A compact, integrated acoustic localization and communications array includes an air-backed transmit element having a first end on which an end cap is disposed, and a second end configured to be mounted to a mounting surface. A volumetric acoustic array including a plurality of receiver elements that is electrically integrated to the transmit element. The localization and communications array is configured to transmit, via the transmit element, and receive, via the plurality of the receiver elements, an acoustic signal having a frequency in the range of 10 kHz to 50 kHz. Each of the plurality of receiver elements are spaced apart from the end cap at least a distance. The distance is greater than ¼ of a wavelength associated with the frequency transmitted and received by the localization and communications array, and is not equal to an odd multiple of ¼ of the wavelength.
A packing module includes a volumetrically efficient structure for separately retaining sensors and a cable of a sensor array. The packing module includes a tray that supports the sensors and a retaining leaf arrangement that extends outwardly from the tray to retain the cable on the tray. The retaining leaf arrangement includes a plurality of nested leaves that are spaced relative to each other. Packing the module includes placing the sensors separately and in succession on the tray and inserting a portion of the cable in the retaining leaf arrangement in between each placing of a sensor. The placement of a sensor and insertion of a portion of the cable occurs alternately until the entire sensor array is accommodated. Deployment of the sensor array may occur by alternately removing a sensor and a portion of the cable until the sensor array is displaced from the module.
Methods and apparatus for monostatic pulsed time-resolved wide-field-of-view underwater laser imaging. In embodiments, a rotatable optical assembly consisting of a single pyramid mirror and optical ports for each facet is used to both direct a transmitted pulsed laser beam to a target and focus the return signal to a high dynamic range detector, such as a photomultiplier tube, The detector output signal is sampled by a high-speed digitizer and can be processed to generate three-dimensional images.
A sensor system includes a triplet element including a first hydrophone, a second hydrophone, and a third hydrophone configured to receive an incoming signal at a first phase, a second phase, and a third phase, respectively, the first to third hydrophones extending along a first direction, and a processor configured to determine an incidence direction of the incoming signal, and to dynamically generate a cardioid null in the incidence direction to reject the incoming signal based on the incoming signal at the first to third phases.
G01S 3/808 - Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
G01S 7/539 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group using analysis of echo signal for target characterisation; Target signature; Target cross-section
G01S 15/42 - Simultaneous measurement of distance and other coordinates
G01S 15/89 - Sonar systems specially adapted for specific applications for mapping or imaging
G01V 1/18 - Receiving elements, e.g. seismometer, geophone
41.
TAILORED COLDPLATE GEOMETRIES FOR FORMING MULTIPLE COEFFICIENT OF THERMAL EXPANSION (CTE) ZONES
An apparatus includes a coldplate (104, 200, 300) configured to be thermally coupled to a structure (100) to be cooled and to remove thermal energy from the structure. The coldplate includes (i) first and second outer layers (202 and 206, 302 and 306) having at least one first material and (ii) a third layer (204, 304) embedded in the outer layers and having at least one second material. The first and second materials have different coefficients of thermal expansion (CTEs). The third layer is embedded non-uniformly in the outer layers so that different zones (114a-114c, 212a-212c, 312a-312c) of the coldplate have different local CTEs. The third layer may include openings (210, 310) extending through the second material(s), and projections (208, 308) of the first material(s) from at least one of the first and second outer layers may partially or completely fill the openings. The first and second outer layers may include aluminum or an aluminum alloy, and the third layer may include aluminum silicon carbide or thermal pyrolytic graphite.
A radio frequency (RF) energy transmission line transition for coupling RF energy between a pair of RF transmission line sections disposed on intersecting surfaces of a corresponding one of a pair of conductive members, a first one of the pair of conductive members having a wall with a jog therein for receiving an end portion of a second one of the pair of conductive members, the end portion of an electrically conductive strip of the first one of the pair of radio frequency transmission line sections being disposed on, and electrically connected to, an electrically conductive strip of a second one of the pair of radio frequency transmission line sections.
Discussed herein are devices, systems, and methods for multi-image ground control point (GCP) determination. A method can include extracting, from a first image including image data of a first geographical region, a first image template, the first image template including a contiguous subset of pixels from the first image and a first pixel of the first image indicated by the GCP, predicting a first pixel location of the GCP in a second image, the second image including image data of a second geographical overlapping with the first geographical region, extracting, from the second image, a second image template, the second image template including a contiguous subset of pixels from the second image and a second pixel corresponding to the pixel location, identifying a second pixel of the second image corresponding to a highest correlation score, and adding a second pixel location of the identified pixel to the GCP.
Discussed herein are devices, systems, and methods for merging point cloud data with error propagation. A can include reducing a sum aggregate of discrepancies between respective tie points and associated 3D points in first and second 3D images, adjusting 3D error models of the first and second 3D images based on the reduced discrepancies to generate registered 3D images, and propagating an error of the first or second 3D images to the registered 3D image to generate error of the registered 3D images.
A radar system and method are provided for reducing multipath interference signals. The multipath interference signals can be reduced by the radar system emitting electromagnetic waves that creates a null in the direction of expected multipath interference signals, such that the multipath interference signals are void (or substantially void) from signals received by the radar system.
G01S 7/02 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group
Subject matter regards generating a 3D point cloud and registering the 3D point cloud to the surface of the Earth (sometimes called -geo-locating"). A method can include capturing, by unmanned vehicles (UVs), image data representative of respective overlapping subsections of the object, registering the overlapping subsections to each other, and geo- locating the registered overlapping subsections.
A magnetic component includes a main magnetic core, a power winding coupled to the main magnetic core, a variable reluctance core element arranged in a flux path of the main magnetic core and including a saturable magnetic core and a control winding coupled to the saturable magnetic core. The control winding is isolated relative to the power winding and configured to selectively saturate a section of the saturable magnetic core.
An electrical machine includes as part of its stator XRAM windings for multiplying current output of the machine. The XRAM windings are coupled to switching elements that are configured to produce current multiplication for output to an external load. The XRAM windings may be in slots in the stator, or may be elsewhere in the stator, operatively coupled to other windings in the stator. The stator may be operatively coupled to a rotor and hence to an inertial energy source, such as a flywheel on the same shaft as the elements of the electrical machine. Short circuiting of select windings of the machine can advantageously cause a shifting and concentration of a machine airgap flux of the machine over other windings.
H02K 7/02 - Additional mass for increasing inertia, e.g. flywheels
H02K 16/04 - Machines with one rotor and two stators
H03K 3/57 - Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback the switching device being a semiconductor device
49.
TERMINAL BLOCK AND TERMINAL BLOCK ASSEMBLY FOR MEDIUM TO HIGH VOLTAGE APPLICATIONS
Systems and method are described for a terminal block that can include an insulating block that is composed of an electrically insulating material. The insulating structure can have a first via extending between a first and second opening in the insulating block. A second via can extend between a third and fourth opening in the insulating block. A distance between the first and second openings may be less than a distance between the third and fourth openings. A first electrical conducting element can extend between the first and second openings. A second electrical conducting element can extend between the third and fourth openings. The first and second electrical conducting elements can be separated from one another by a portion of the insulating block.
Methods and apparatus for a phase array radar to generate fan beams with curve of constant phase (102) with spoiling in u and/or v space. In embodiments, beam pattern weighting is phase-only and applicable to transmit and receive. In embodiments, the beam pattern accounts for the apparent curvature of the horizon in uv space.
G01S 7/03 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group - Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
Embodiments of a controller device and methods of control for a radio frequency (RF) test environment are generally described herein. The RF test environment may include the controller device, an RF generator, and a device under test (DUT). The DUT may be configurable to switch between multiple configurations. The controller device may receive feedback from the DUT that indicates a current configuration of the DUT. The controller device may use a machine learning rule to determine a set of candidate future configurations of the DUT based on the current configuration of the DUT. The controller device may generate a set of RF waveforms corresponding to the set of candidate future configurations of the DUT, and may transfer the set of RF waveforms to the RF generator.
A reference signal distribution system is disclosed. The reference signal distribution system can include a power splitter to create, from a frequency-divided reference signal, a counterclockwise divided reference signal and a clockwise divided reference signal. The reference signal distribution system can include a distribution ring to provide the counterclockwise divided reference signal to a ring tap, and provide the clockwise divided reference signal to the ring tap. The reference signal distribution system can include a ring tap to produce a phase synchronization signal based the counterclockwise divided reference signal and the clockwise divided reference signal. The reference signal distribution system can include an analog regenerative frequency divider to produce a common phase reference signal based in part on the phase synchronization signal.
H04B 1/403 - Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
G01S 7/03 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group - Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
H01Q 3/34 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture varying the phase by electrical means
A modular phased array antenna that includes a plurality of modular antenna array blocks assembled together as a single antenna array and an array face having an array plate and a radiator and radome assembly for each modular block interlocked and aligned to create a single monolithic array face. Each modular antenna array block includes: a plurality of transmit/receive integrated multichannel module (TRIMM) cards, each TRIMM card including power and beamforming signals, where power and beamforming signals are connected in parallel to each modular antenna array block, a plurality of radiators for radiating antenna signals having a radiator face, a radome integrated with the plurality of radiators and interfacing directly to the radiator face, where the radome does not extend beyond the radiator face, and a frame for supporting the TRIMM cards.
A method comprising: providing an autonomous vehicle (AV) with a first estimated position of a target; directing the AV to travel toward the first estimated position at a constant velocity; receiving echo signals of transmitted sonar signals, the echo signals indicating a range and an azimuth of the target; determining a depth difference of the AV and the target based on the received echo signals, the depth difference being determined based on changes to the range and azimuth of the target over time; and in response to a depth difference existing, re-directing the AV toward a second estimated position of the target generated from the depth difference.
G01S 15/06 - Systems determining position data of a target
G01S 15/42 - Simultaneous measurement of distance and other coordinates
G01S 15/50 - Systems of measurement based on relative movement of target
G05D 1/242 - Means based on the reflection of waves generated by the vehicle (using passive navigation aids external to the vehicle G05D 1/244;using signals provided by artificial sources external to the vehicle G05D 1/247)
G05D 1/46 - Control of position or course in three dimensions
55.
MULTI-HEADED WEB-APPLICATION ARCHITECTURE AND MESSAGING STRUCTURE
A web application configured to open multiple browser windows as a parent window and multiple child windows. The multiple browser windows communicate via a broadcast channel setup by the parent window. The multiple browser windows are positioned according to a layout received from an application page that each of the browsers loads. Each window is part of a whole, single application, and not a clone of an application with a message handler.
G09G 5/37 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of individual graphic patterns using a bit-mapped memory - Details of the operation on graphic patterns
G06F 16/957 - Browsing optimisation, e.g. caching or content distillation
G06F 16/958 - Organisation or management of web site content, e.g. publishing, maintaining pages or automatic linking
H04L 67/02 - Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
H04L 67/2869 - Terminals specially adapted for communication
G09G 5/38 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of individual graphic patterns using a bit-mapped memory with means for controlling the display position
56.
OPTICAL WINDOW WITH INTEGRATED TEMPERATURE SENSING
Methods and apparatus for measuring and optionally adjusting the temperature profile of an optical window. In one example, an optical window with integrated temperature sensing functionality includes a first window layer of an optically transparent material, a second window layer of the optically transparent material, an electromagnetic interference shielding grid disposed between the first and second window layers and including a first electrically conductive structure and a second electrically conductive structure, and a thermally sensitive material disposed between the first and second electrically conductive structures, the thermally sensitive material having an electrical property that varies as a function of temperature.
E06B 5/16 - Fireproof doors or similar closures; Adaptations of fixed constructions therefor
E06B 5/18 - Doors, windows, or like closures for special purposes; Border constructions therefor for other protective purposes against harmful radiation
G05D 23/19 - Control of temperature characterised by the use of electric means
H05K 9/00 - Screening of apparatus or components against electric or magnetic fields
G01K 7/00 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat
G01K 7/16 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements
A frequency selective limiter (FSL) having an input port and an output port can comprise a plurality of vertically stacked transmission line structures. Each of the transmission line structures can be electrically coupled to a transmission line structure disposed directly above it and with a first one of the plurality of vertically stacked transmission line structures having one end corresponding to the FSL input port and a second one of the plurality of vertically stacked transmission line structures having one end corresponding to the FSL output port. Each of the plurality of vertically stacked transmission line structures can comprise a magnetic material having first and second opposing surfaces and one or more conductors disposed on at least one of the surfaces of the magnetic material.
H01F 1/34 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
H01P 1/215 - Frequency-selective devices, e.g. filters using ferromagnetic material
H01P 1/23 - Attenuating devices using ferromagnetic material
H01P 5/02 - Coupling devices of the waveguide type with invariable factor of coupling
H03G 11/00 - Limiting amplitude; Limiting rate of change of amplitude
According to aspects of the disclosure, a method is disclosed comprising: detecting a first hop to a first frequency in a hopping sequence, the first hop being performed by a transmitter in accordance with the hopping sequence; identifying a weighting vector that corresponds to a second frequency in the hopping sequence; obtaining an equalizer vector for the second frequency based on the weighting vector and an equalizer matrix, the equalizer matrix including a plurality of equalizer vectors, each equalizer vector corresponding to a different frequency in the hopping sequence; detecting a second hop from the first frequency to the second frequency, the second hop being performed by the transmitter in accordance with the hopping sequence; receiving a signal that is transmitted by the transmitter at the second frequency; and equalizing the signal by using the equalizer vector for the second frequency.
An underwater celestial navigation beacon configured to provide position information is disclosed. The underwater celestial navigation beacon can include a data store configured to store an astronomical model of the moon. The underwater celestial navigation beacon can include an inertial measurement unit (IMU) operable to capture IMU data that includes three-axis acceleration data and three-axis rate gyroscopic data. The underwater celestial navigation beacon can include a controller. The controller can determine a latitude of the underwater celestial navigation beacon using the three-axis rate gyroscopic data. The controller can determine a longitude of the underwater celestial navigation beacon based on a gravitational pull of the moon, using the three-axis acceleration data and the astronomical mode! of the moon. The controller can determine the position information for the underwater celestial navigation beacon based on the latitude and longitude.
A power amplifier (10) having: a plurality of N amplifier modules, where N is an integer greater than one; an M:N power splitter having M inputs, where M is an integer less than N, and N outputs, each one of the N outputs being coupled to an input of a corresponding one of the plurality of N power amplifiers; a plurality of M delay lines, each one the M delay lines having an output coupled to a corresponding one of the M inputs of the M:N power splitter, each one of the plurality of M delay lines being coupled to a common input of the power amplifier.
A system includes a first jacket (202) that contains water and a first tank (206) storing a first fluid under pressure. A second jacket (204) contains water and a second tank (208) storing a second fluid under pressure. An actuator cylinder (214) defines a space that receives the fluids from the first and second tanks. The actuator cylinder includes an actuator piston (234) that divides the space into a first volume for the first fluid and a second volume for the second fluid. A hydraulic cylinder (216) includes a hydraulic piston (236) configured to move and change an amount of hydraulic fluid (218) in the hydraulic cylinder, where the hydraulic piston is fixedly coupled to the actuator piston. A buoyancy plug (108) changes a position in connection with the amount of the hydraulic fluid in the hydraulic cylinder, where the position of the buoyancy plug affects a buoyancy of a vehicle (100).
An apparatus includes first and second tanks (402-404, 1002-1004) each configured to receive and store a refrigerant under pressure. The apparatus also includes a cylinder (406, 1006) defining a space configured to receive the refrigerant from the first and second tanks. The apparatus further includes a piston (420, 1020) passing into the cylinder and having a head (422), where the head divides the space within the cylinder into a first volume for the refrigerant from the first tank and a second volume for the refrigerant from the second tank. In addition, the apparatus includes a converter (408, 1008) configured to translate linear movement of the piston into rotational motion and a generator (604, 1062) configured to produce electrical power based on the rotational motion.
A modular communications array includes: an antenna card including a patch antenna array for communicating RF signals; a chip carrier card including a plurality of monolithic microwave integrated circuits (MMICs), each with a power amplifier (PA) and positioned on a respective metal post of a plurality of metal posts, wherein; a phase shifter card including a plurality of phase shifter circuits for beam steering and gain control and a plurality of cavities. Each of the cavities corresponds to a location for the respective metal post on the chip carrier card; and a cooling block coupled to the chip carrier card by a thermally conductive epoxy for cooling, where the phase shifter card is replaceable without affecting the components of the antenna card and the chip carrier card.
A multi-function communications network includes a front-end communications network in signal communication with a plurality of communication nodes. Each communication node includes a plurality of discrete network elements. One or more network element adapters are in signal communication with a respective network element among the plurality of discrete network elements. A network management system is in signal communication with the network element adapters. The network management system is configured to generate reconfiguration parameters in response to an operating disruption of at least one affected node among the plurality of communication nodes. At least one of the network elements included in the affected node is reconfigured based at least in part on the reconfiguration parameters.
H04L 41/0816 - Configuration setting characterised by the conditions triggering a change of settings the condition being an adaptation, e.g. in response to network events
65.
SENSOR SUSPENSION SYSTEM AND ASSOCIATED DEPLOYMENT SYSTEMS FOR UNDERWATER DEPLOYMENT OF SENSOR ARRAY
A sensor suspension system for use in an underwater environment comprises a sensor (e.g., vector sensor) and a framework comprising a plurality of support structures, and a plurality of compliant devices that suspend the sensor within an inner volume of the framework. The plurality of compliant devices facilitate a symmetrical sensing response of the sensor in three degrees of freedom when deployed in the underwater environment. The framework is moveable from a collapsed position to an expanded position. A plurality of sensor suspension systems can be tethered together into a sensor array by a deployment control system operable to release a buoyant device, tethered to the sensor suspension systems, that vertically positions the plurality of sensor suspension systems into the sensor array. The buoyant device can cause each framework to expand via pulling force through the tethers upon release of the buoyant device.
G10K 11/00 - Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
A method is disclosed comprising: transmitting a pair of tracking signals, the pair of tracking signals including a first tracking signal and a second tracking signal; receiving a data set that is collected by using a sensor in a sensor array, the data set including: (i) a received first tracking signal that is generated by the sensor in response to receiving the first tracking signal, (ii) a received second tracking signal that is generated by the sensor in response to receiving the second tracking signal, and (iii) a received target signal; detecting a relative delay at which the first tracking signal and the second tracking signal are received by the sensor; removing the received first tracking signal and the received second tracking signal from the data set to produce a filtered data set; and providing the filtered data set and an indication of the relative delay to a beamformer.
G01S 7/52 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group
An hourglass transducer (100) including a longitudinal driver (105), a shell (110, 200, 300, 301), and a pair of endcaps (115) is provided. The driver drives the transducer. The pair of endcaps is attached to ends of the driver and cap the shell enclosing the transducer. The shell includes a first shell end (210), a second shell end (210), and a pleated geometry (205). The first shell end and second shell end are structured with circular cross sections. The pleated geometry is between the first shell end and the second shell end. A perimeter of the pleated geometry is the same as perimeters of the circular cross sections of the first shell end and the second shell end.
G10K 9/12 - Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
G10K 9/125 - Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using piezoelectric driving means with a plurality of active elements
G10K 9/128 - Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using magnetostrictive driving means
Methods and apparatus for a sensor system having a structure having a reflective surface, wherein the structure is rotatable about a longitudinal axis. Channels provide respective paths from an entry into the channels to the reflective surface. A shroud selectively block ones of the channels to provide an operational configuration and a calibration configuration.
Various exemplary systems for transporting and switching optical components are disclosed. The system includes carriers (14) disposed about a housing (4) and configured to follow a carrier guide system (16) to switch optical components at the optical prescription center of the optical path. In one example, a device is disclosed that reduces the packaging form factor through the use of carriers rotated about an inverted radius along a track adjacent to a limiting peripheral boundary. The system and device are configured to switch optical components while minimizing the form factor of the optical device. Methods of accomplishing these tasks are also disclosed.
An underwater vehicle includes a plurality of releasable panel members that are initially in a storage state in which the releasable panel members form a closed housing and the underwater vehicle is neutrally buoyant, and an actuatable effector that is retained in the closed housing. The effector has an anchor and a positively buoyant upper unit opposite the anchor. When the plurality of releasable panel members are released to open the closed housing, the effector is separable from the releasable panel members and maintained in a vertically downward direction by the anchor and the positively buoyant upper unit.
A dual-axis flexure gimbal device, such as for a fast-steering mirror assembly, can comprise a flexure spring mass body comprising first and second body sections, a flexure diaphragm that interconnects the first and second body sections, and a central aperture formed through the first and second body sections and the flexure diaphragm. A flexure unit can be situated in the central aperture, and can comprise a plurality of slots defining a plurality of flexures. The flexure diaphragm bends about first and second rotational degrees of freedom, and the plurality of flexures of the flexure unit flex about respective first and second rotational degrees of freedom. The flexure unit can comprise a plurality of slots, each having a first slot portion and a second slot portion extending in different directions to define a respective flexure. A method of making the dual-axis flexure gimbal device is provided.
A method includes: forming a virtual tile cluster having tiles, wherein a tile comprises a processor and memory from a CPU device and a GPU device, and a tile in the GPU device further comprises subprocessors; forming a virtual unified memory that is accessible by the CPU and GPU devices; receiving a task; assigning the task to a tile of the virtual tile cluster according to a pre-defined rule. When the task is assigned to a tile in the GPU device, the method further performs: broadcasting the task to the subprocessors of a tile using a GPU shuffle instruction; and dividing data for the task and assigning the divided data to the subprocessors, wherein each subprocessor runs a codelet using the each of divided data. The task is executed by the at least one tile of the virtual tile cluster.
A tuned mass absorber assembly comprises a mass structure, and a flexure system comprising first and second flexure sections supported by, and extending in opposing directions from, the mass structure. The flexure system can comprise flexure section mounts situated at distal ends of the first and second flexure sections, respectively, and that are operable to mount the tuned mass absorber assembly to a structure subject to induced vibrations therein. A mass of the mass structure and a stiffness of the flexure system can be tuned to attenuate vibrations at a specific input frequency generated in response to induced vibrations of the structure. A system can comprise a vibration isolator attached to a chassis, and supporting a payload (sensors(s)) and isolating the payload from vibrations. A tuned mass absorber assembly can be mounted to the vibration isolator for attenuating vibrations at a specific input frequency that may affect the payload.
An apparatus includes an optical device (100) that includes a substrate (108), a first layer of material (116) over the substrate, and a second layer of material (120) comprising an optical coating over the first layer of material. The first layer of material creates a first stress within the optical device that counteracts a second stress within the optical device created by the second layer of material. The optical device may also include a third layer of material (112) positioned between the substrate and the first layer of material. In some cases, the second layer of material creates a compressive stress within the optical device, and the first layer of material creates a tensile stress within the optical device that counteracts the compressive stress within the optical device.
An apparatus includes a reflector (206) having one or more reflective faces (302) and an opening (304). The reflector is selectively movable into and out of an optical path of an alignment beam (108). When the reflector is located within the optical path of the alignment beam, (i) the one or more reflective faces are configured to reflect a first portion of the alignment beam and (ii) the opening is configured to allow passage of a second portion of the alignment beam through the reflector. The reflector may include a retro-reflector, the retro-reflector may include multiple reflective faces, and the multiple reflective faces may be positioned around the opening.
A shutter assembly comprises a base coupled to a photosensor assembly, a flexure device supported by the base, and a shutter arm rotatably coupled to the base via the flexure device. An actuation mechanism is coupled to the shutter arm, and is operable, upon application of an electric field, to rotate the shutter arm from a first position to a second position to manage light relative to a photosensitive device of the photosensor assembly. In the second position, the flexure device stores energy such that, upon removal of the electric field, the flexure device releases the stored energy to return the shutter arm to the first position. A keeper magnet can be provided to maintain the shutter arm in the second position, so that the electric field can be removed while the keeper magnet maintains a magnetic force to keep the shutter arm in the second position.
G02B 26/00 - Optical devices or arrangements for the control of light using movable or deformable optical elements
G02B 26/02 - Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
A multi-axis flexure device comprising a first flexure of the first flexure device can be coupled to the first support base such that the first support base and the flexure coupler of the first flexure device relatively rotate about the first axis. A second flexure of the first flexure device can be coupled to the central coupler such that the central coupler and the flexure coupler of the first flexure device relatively rotate about the first axis. A first flexure of the second flexure device can be coupled to the second support base such that the second support base and the flexure coupler of the second flexure device relatively rotate about the second axis. A second flexure of the second flexure device can be coupled to the central coupler such that the central coupler and the flexure coupler of the second flexure device relatively rotate about the second axis.
A sandwich structure includes two face plates, with a lattice structure between the plates, and with hard points at selected locations. The face plates, and the lattice structure with its hard points, may all be made as a single continuous piece by an additive manufacturing process. The hard points may be strengthened and/or stiffened areas of the lattice that may be used for connecting fasteners, or for other purposes. The hard points may be located at the junction between the lattice and one of the faces, and may be a locally thickened portion on one of the faces, for example being a cylindrical or parallelepiped protrusion out from the face. The hard points may serve the purpose of a built-in nut plate, such as themselves containing threaded holes, or by having a threaded inserts put into holes or recesses in the hard points.
A cleaning tool (100) is disclosed for cleaning an object (e.g., a threaded fastener) and retaining debris from cleaning the object. The cleaning tool can comprise a housing (102) operable to be rotated by hand or by a hand tool (703), and a cleaning chamber (108) formed through the housing. A plurality of retaining cavities (110) are formed through the housing and in fluid communication with the cleaning chamber, and a plurality of cleaning elements (104) (e.g., shafts having bristles) are supported by respective retaining cavities, such that a portion of the cleaning elements (e.g., wire bristles) extend into the cleaning chamber for cleaning the object upon rotation of the housing relative to the object. Elastic elements (326) can be supported by the housing for biasing the cleaning elements to accommodate cleaning different sizes of objects. Associated systems and methods are provided.
B23G 9/00 - Working screws, bolt heads or nuts in conjunction with thread cutting, e.g. slotting screw heads or shanks, removing burrs from screw heads or shanks; Finishing, e.g. polishing, any screw thread
A position sensor device includes a sensor head with a sensor coil, and an analog-to-digital (A/D) converter for digitizing output from the sensor coil, and sending the digital input to electronics of the device for further processing. The A/D converter is located closer to the coil than it is to the electronics, which may be in an electronics box mounted remotely from the sensor head. The A/D converter may be a part of the sensor head, may be adjacent to the sensor head, and/or may be connected to the sensor coil by an analog output cable. The analog output cable between the sensor coil and the A/D converter may be of negligible length (and of negligible capacitance), and in any event may be shorter than a digital output cable between the A/D converter and the electronics.
G01D 5/20 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
Systems and methods are provided herein for implementing a hybrid communications network including both radar and radio communications devices. These systems and methods may advantageously include shared resource allocation protocols for automatically allocating communication resources for transmitting and/or receiving a signal using a device in the network based on one or more dimensions of separability for the signal selected from time-division, frequency-division, spatial-division and/or code-division multiplexing. Importantly, the resource allocation protocol may account for radar specific operational parameters of one or more radar devices in the network.
A coolant interface includes a line replaceable unit (LRU) (103) inserted into a slot within a modular assembly such as a chassis (101) for an electronics assembly. Quick disconnect fluid coupling fittings (131) on the LRU mate with counterpart fittings (111) on a fluid distribution manifold (110) within the chassis when the LRU is inserted into the slot. A seal (133) surrounding the quick disconnect fluid coupling fittings on a flat surface (132) abutting a counterpart surface on the fluid distribution manifold when the LRU is inserted into the slot compresses the seal against the counterpart surface. Alignment pin(s) (134) projecting from the flat surface and received by corresponding guide holes within the counterpart surface, and captive hardware (135) provides pressure between the flat surface and the counterpart surface to increase and maintain compression of the seal. The alignment pins and captive hardware are arranged to increase mechanical stability of the connection.
A network system is provided. The network system includes a first network device and a second network device running in data link layer (L2). The first network device includes a first switch and a first PPPoE (Point-to-Point over Ethernet) agent integrally coupled to the first switch. The second network device also includes a second switch and a second PPPoE agent integrally coupled to the second switch. The network system further includes a PPPoE client running in network layer (L3) that communicates to the first PPPoE agent and a PPPoE server in L3 that communicates to the second PPPoE agent. The PPPoE client uses a broadcast (Beast) MAC address in an initial IPCP (Internet Protocol Control Protocol) negotiation message between the PPPoE client and the PPPoE server.
A method can include registering a first image of a region to a three-dimensional (3D) point set of the region to generate a registered first image, registering a second image of the region to the 3D point set to generate a registered second image, identifying, based on the 3D point set, geometric tie points of the registered first image and the registered second image, projecting, using an affine transformation determined based on the identified geometric tie points, pixels of the registered first image to an image space of the registered second image to generate a registered and transformed first image, and displaying the registered and transformed first image and the registered second image simultaneously.
Disclosed are an improved nozzle for an unmanned underwater vehicle (UUV), and a method for operating the same. The nozzle includes a first rigid member operatively coupled to a UUV steering mechanism. The nozzle also has a second rigid member, coupled to the first rigid member by a flexible bellows according to a configurable operating angle. The nozzle does not extend beyond a bounding surface when stored but does when deployed. Water traversing the first rigid member and contacting the second rigid member produces a reactive force according to the configurable operating angle. Simultaneous and independent control of the volume of fluid traversing several such nozzles in the UUV, and their respective orientations and operating angles, permits automatic station-keeping or navigation according to another guidance objective.
B63H 11/10 - Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof
B05B 15/70 - Arrangements for moving spray heads automatically to or from the working position
Discussed herein are devices, systems, and methods for image processing. A method can include generating a synthetic image based on a two-dimensional (2D) image of the geographical region, performing a coarse registration to grossly register the synthetic image to the 2D image, and performing a fine registration following the coarse registration to improve the registration between the synthetic image and the 2D image.
Discussed herein are devices, systems, and methods for synthetic image generation. A method can include projecting a three-dimensional (3D) point set of a first geographical region to an image space of an image of a second geographical region to generate synthetic image data, identifying control points (CPs) between the image and the synthetic image data, adjusting a geometry of the synthetic image data based on the identified CPs, determining metadata for the synthetic image based on metadata of the image, and associating the determined metadata with the synthetic image data to generate the synthetic image.
A semiconductor device has a substrate with both compressive and tensile layers deposited overlying a single major surface (face) of the device. The tensile layer may be deposited directly on the substrate of the device, with the compressive layer overlying the tensile layer. A transition material may be located between the tensile layer and the compressive layer. The transition material may be a compound including the components of one or both of the tensile layer and the compressive layer. In a specific embodiment, the tensile material may be a silicon nitride, the compressive layer may be a silicon oxide, and the transition material may be a silicon oxy-nitride, which may be formed by oxidizing the surface of the tensile silicon nitride layer. By depositing both tensile and compressive layers on the same face of the device the opposite major surface (face) is free for processing.
Generally discussed herein are systems, devices, and methods for improved automatic toll generation. A system can include one or more cameras positioned to capture images of vehicles passing through a toll station, vehicle detection and classification circuitry to receive an image of a vehicle from the one or more cameras and execute a first machine learning (ML) model to classify the vehicle, axle count circuitry to, in response to receiving data from the vehicle detection and classification circuitry that a vehicle was detected, execute a second ML model to classify a number of axles of the vehicle for determining a toll charge, and toll circuitry to issue the toll charge based on the classified number of axles.
CA 03091120 2020-08-12 (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property 0 1 11111 1 111111 11 111111 1 11 11111 1 111 1111 1 1 1 1 1 11 1111 11111 1111 11111 11 1111111111 1 11 1111 Organization ----- International Bureau (10) International Publication Number (43) International Publication Date ...0"") WO 2019/240843 Al 19 December 2019 (19.12.2019) WIPO I PCT (51) International Patent Classification: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, H02K 9/22 (2006.01) HO2K 7/08 (2006.01) CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, HO2K 1/27 (2006.01) H02K 21/02 (2006.01) DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, H02K 5/173 (2006.01) H02K 21/24 (2006.01) HR, HU, ED, EL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, (21) International Application Number: MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, PCT/U52019/015131 OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, (22) International Filing Date: SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, 25 Januaiy 2019 (25.01.2019) TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (25) Filing Language: English (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, (26) Publication Language: English GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, (30) Priority Data: UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, 16/009,0'73 14 June 2018 (14.06.2018) US TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, EE, IS, IT, LT, LU, LV, (71) Applicant: RAYTHEON COMPANY [US/US]; 8'70 MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, Winter Street, Waltham, Massachusetts 02451-1449 (US). TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, (72) Inventors: MILLER, Kirk A.; 44'76 Royal Ln., Dallas, KM, ML, MR, NE, SN, TD, TG). Texas '75229 (US). GRAUE, Brian M.; 3609 Sequoia Ln., Melissa, Texas '75454 (US). BOGERT, William T.; 6'724 Published: ¨ Bellehaven Dr., Plano, Texas '75023 (US). ¨ with international search report (Art. 21(3)) = (74) Agent: DOYLE, David M. et al.; Munck Wilson Mandala, . LLP, 600 Banner Place Tower, 12'7'70 Coit Road, Dallas, Texas '75251 (US). = - (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, = (54) Title: METHOD FOR HEAT TRANSFER ACROSS ROTARY JOINT (57) Abstract: A torque motor (100) includes a large area rotor (101), a stator (102) sur- . rounding at least a portion of the rotor (101), and a small air gap (103) separating the rotor *WM iii m 100 (101) from the stator (102) to allow frictionless thermal coupling between the rotor (101) N II . r" and the stator (102). Heat from the rotor (101) is transferred to the stator (102) by conduc- FAPAIAW il r aamil 4. tion. The stator (102) contacts an inner surface for a housing (105) of the torque motor . ¨ (100) for conductively coupling to a cold environment air flow exterior to the torque motor 101- I 441. , --A14 11,4 !! housing (105). The air gap (103) may have a dimension of about 0.002 to 0.003 inches. The 1 i't-1. 1 stator (102) may be conductively coupled to the torque motor housing (103) by one of a = 102 , ,,,,,A = - , , thermal gap pad or high conductivity thermal gap filling compound. Heat conduction from 103 A r',.> -1 r , 1 . the rotor (101) to the stator (102) preferably occurs without rotation of the rotor (101). 105 d I I =- !LI ' :. ' ' % . =1 16 , ''.". _ 1 1 _ r ' f tkrI i r 1 t 1 101 IV re) 1)r 1 11411.-. ' ' Ire 102 . i. : = , 1 C /7 ii- ... :. r ie e Ire 1103 ..t1:410 4 / i r -...... GT '4074 kAlo 0 FIG. 1 el c
H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
H02K 21/02 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets - Details
H02K 21/24 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
91.
HEAT EXCHANGERS FOR MULTI-AXIS GIMBAL POINTING OR TARGETING SYSTEMS
An apparatus includes a heat exchanger (100, 1000) configured to be positioned around and coupled to a multi-axis gimbal (600, 1400). The heat exchanger includes an inlet (102, 1008) configured to receive fluid containing heat generated by an equipment package (604, 1404) carried by the gimbal. The heat exchanger also includes multiple heat rejection interfaces (106, 1006) configured to reject the heat from the fluid into surrounding air in order to cool the fluid. The heat exchanger further includes an outlet (104, 1010) configured to provide the cooled fluid from the heat exchanger. The heat rejection interfaces of the heat exchanger extend around the heat exchanger and are configured to reject the heat from the fluid regardless of a direction in which the gimbal is pointing the equipment package.
F28D 9/00 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
G01C 21/16 - Navigation; Navigational instruments not provided for in groups by using measurement of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
92.
METHODS AND SYSTEMS FOR PULSE ASSOCIATION OF AGILE EMITTERS
An advance warning system including an antenna pair and an RWR system to receive first, second and third signals for computing a frequency for all the signals and a phase difference between the signals. If the frequencies are within a threshold frequency difference and the phase difference is less than a threshold phase difference, two signals can be associated. If the frequencies are not within the threshold frequency difference, the RWR system generates a set of ambiguous angle of arrival AoA for the signals and correlates the two sets of ambiguous AoA to determine if there is a common AoA. If there is a common AoA, a third set of ambiguous angle of arrival AoA for a third signal is generated to determine if the three sets correlate. If there is a common AoA for all three signals, the three signals are associated.
G01S 3/46 - Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
G01S 7/02 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group
H01Q 1/28 - Adaptation for use in or on aircraft, missiles, satellites, or balloons
H01Q 21/28 - Combinations of substantially independent non-interacting antenna units or systems
93.
METAL ISOLATOR WITH TUNABLE RESONANT FREQUENCIES AND METHOD FOR MAKING THE ISOLATOR
An isolator device comprises a first mount coupleable to an input structure subject to shock and/or vibration energy, a second mount coupleable to an object to be isolated. A flexure structure coupled between the first and second mounts, and comprises a plurality of parallel flexures, a series of flexures, and a plurality of transition portions, all defining an isolation path between the first and second mounts. The parallel flexures are tuned to resonant frequency to attenuate shock and/or vibration in an axial direction relative to a normal axis. The series of radial flexures are tuned to resonant frequencies to attenuate shock and/or vibration energy in both radial directions relative to the normal axis. The isolator device can be a single piece of metallic material. An elastomeric damping material can be disposed within openings defined by the flexure structure to dampen response at the isolator's resonant frequency.
F16F 15/04 - Suppression of vibrations of non-rotating, e.g. reciprocating, systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating system using elastic means
F16F 1/02 - Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
F16F 1/373 - Springs made of material having high internal friction characterised by having a particular shape
F16F 3/02 - Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
F16F 3/08 - Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of a material having high internal friction, e.g. rubber
F16F 15/08 - Suppression of vibrations of non-rotating, e.g. reciprocating, systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating system using elastic means with rubber springs
Optical signal receivers and methods are provided that include multiple optical resonators, each of which receives a portion of an arriving optical signal. Various of the optical resonators are tuned or detuned from a carrier wavelength, and produce an intensity modulated output signal in response to modulation transitions in the arriving optical signal. A detector determines phase transitions in the arriving optical signal, by analyzing the intensity modulation output signals from the optical resonators, and distinguishes between differing phase transitions that result in a common final state of the arriving optical signal.
A system for generating analog output from a field programmable gate array. The field programmable gate array has a plurality of digital transceivers, each including a transmitter with an output drive circuit having a programmable output voltage swing. Two or more of the transmitters are programmed to have output voltage swings differing from each other by about a factor of two. A circuit that operates as a digital to analog converter is formed by combining the outputs of the transmitters, using a power combiner.
H03K 19/177 - Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components arranged in matrix form
96.
BALANCED OPTICAL RECEIVERS AND METHODS FOR DETECTING FREE-SPACE OPTICAL COMMUNICATION SIGNALS
Optical receivers and methods for balanced signal detection using an optical resonator. An example of an optical receiver includes a polarizing beamsplitter (104) that receives a free-space optical signal, a first detector (116) positioned to receive the free-space optical signal with the first polarization, an alignment system (122) configured to rotate either the optical receiver about the optical axis (132) or a polarization of the free-space optical signal (by means of a half-wave plate located on the incident side of the PBS 104), a faraday rotator (114) configured to rotate the polarization of the free-space optical signal, an optical resonator (102) that receives the free-space optical signal from the faraday rotator (114) and accumulates resonant optical signal energy, the optical resonator configured to transmit first output optical signal energy (134) and reject second output optical signal energy (136), the optical resonator (102) being configured to convert a modulation of the free-space optical signal into an intensity modulation of the first and second output optical signal energies, a second detector (118) that receives the first output optical signal energy and detects the intensity modulation of the first output optical signal energy, and a third detector (120) that receives the second output optical signal energy.
Multispectral optical interference coatings and methods. In one example, an optical element includes a substrate having a first surface and a second surface disposed opposite the first surface, a first multi-layer dielectric film disposed on the first surface of the substrate and constructed and arranged to transmit light in a first band of wavelengths, a second multi-layer dielectric film disposed on the second surface of the substrate and constructed and arranged to transmit light in a second band of wavelengths, the first and the second bands of wavelengths at least partially overlapping, and a bilayer diamond-like carbon (DLC) coating disposed on the first multi-layer dielectric film, the bilayer DLC coating including a first layer and a second layer, the first layer having a modulus of elasticity of a first value, and the second layer disposed on the first layer and having a modulus of elasticity of a second value that is greater than the first value.
G02B 1/02 - Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of crystals, e.g. rock-salt, semiconductors
C23C 14/02 - Pretreatment of the material to be coated
C23C 16/505 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition (CVD) processes characterised by the method of coating using electric discharges using radio frequency discharges
C23C 16/52 - Controlling or regulating the coating process
C23C 28/04 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of inorganic non-metallic material
A cooling structure having a heat generating electric component, a heat spreader comprising thermally anisotropic material, such material having anisotropic heat conducting properties for conducing heat therethrough along a preferred plane, a surface of the heat generating electric component being thermally coupled to the heat spreader, the preferred plane intersecting the surface of the heat generating electric component; and a thermally conductive base having a side portion thermally coupled to the heat spreader, the side portion being disposed in a plane intersecting the preferred plane..
Optical receivers and methods for balanced signal detection using an optical resonator. In one example, an optical receiver includes an optical resonator that receives an optical signal, accumulates resonant optical signal energy, and emits first output optical signal energy from a first output and second output optical signal energy from the second output. In response to a modulation of the optical signal, the optical resonator is configured to disrupt the first and second output optical signal energies to convert the modulation of the optical signal into an intensity modulation of the first and second output optical signal energies. The optical receiver includes a first detector that receives the first output optical signal energy and detects the intensity modulation of the first output optical signal energy, and a second detector that receives the second output optical signal energy and detects the intensity modulation of the second output optical signal energy.
Optical receivers configured to demodulate phase modulated optical signals. In one example, an optical signal receiver includes an optical resonator configured to receive an arriving optical signal and to emit an output optical signal in response to receiving the arriving optical signal, the optical resonator being further configured to transform phase transitions corresponding to phase modulation of the arriving optical into intensity modulation of the output optical signal, an opto-electrical converter configured to convert the output optical signal into an electrical signal, a pulse detector configured to detect pulses in the electrical energy indicative of the phase transitions in the arriving optical signal, and a memory configured to record timing information associated with the pulses detected by the pulse detector.
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