Aspects of the subject technology relate to a method of correcting sensor position. The method comprises transmitting one or more first pulses of a first frequency range towards a first portion of a seabed and one or more second pulses of a second frequency range towards a second portion of the seabed, and receiving a first set and second set of backscattered data. The method further includes processing the first and second set of backscattered data to form a first and second set of image data and comparing the first set and second set of image data. The method further includes creating one or more error vectors between the first set and second set of image data, and updating the first set of backscattered data based on the one or more error vectors to produce an updated set of image data.
G01S 17/89 - Systèmes lidar, spécialement adaptés pour des applications spécifiques pour la cartographie ou l'imagerie
G01S 5/00 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de position; Localisation par coordination de plusieurs déterminations de distance
G01S 7/539 - DÉTERMINATION DE LA DIRECTION PAR RADIO; RADIO-NAVIGATION; DÉTERMINATION DE LA DISTANCE OU DE LA VITESSE EN UTILISANT DES ONDES RADIO; LOCALISATION OU DÉTECTION DE LA PRÉSENCE EN UTILISANT LA RÉFLEXION OU LA RERADIATION D'ONDES RADIO; DISPOSITIONS ANALOGUES UTILISANT D'AUTRES ONDES - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe utilisant l'analyse du signal d'écho pour la caractérisation de la cible; Signature de cible; Surface équivalente de cible
The present invention relates to systems and methods for finding and sampling hydrocarbons from seeps in water or from artificial sources of water. The present invention related to systems and methods for in situ analyzing fluid samples in a body of water. The systems and methods can be used to find hydrocarbons and associated non-hydrocarbons from seeps in water. Such seeps may come from natural sources in deep water, possibly as deep as 3000 m or even more.
A trigger weight camera device (10) that is retrofittable to existing equipment to image underwater objects and underwater processes, and method of using the device (10) to image the underwater objects and the underwater processes.
A buoyant camera device (10) that is mechanically connectable to existing equipment to image underwater objects and underwater processes, and method of using the device (10) to image the underwater objects and the underwater processes.
A computer-implemented method for identifying features of interest in a data image. The method includes identifying data variations in a data image or set of data images, each data image comprising rendered data, identifying one or more features of interest in the data image or set of data images based on the identified data variations, identifying a feature of interest genus corresponding to each identified feature of interest, reclassifying the rendered data based on each of the identified features of interest genuses so as to eliminate background data in the rendered data thereby producing an eliminated background dataset, and generating a feature of interest map for each identified feature of interest genus. A machine learning method, including a training phase, for automatically identifying features of interest in a data image is further provided.
G06K 9/00 - Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales
G06K 9/34 - Découpage des formes se touchant ou se chevauchant dans la zone image
An apparatus for processing an image having elements, the apparatus comprising a processing unit for processing the image and arranged to divide the elements of the image in at least two groups, wherein each group comprises at least two elements, perform a first processing comprising assigning a label to at least one element of the at least one group based on the relation between the at least one element and at least another element of the at least one group, wherein the at least one element is adjacent to the at least another element, and perform a second processing comprising assigning a label to at least one element of the at least one group, wherein the at least one element is adjacent to at least another element of another group different than the at least one group, and wherein assigning the label to the at least one element is based on the relation between the at least one element and the at least another element.
The invention provides an apparatus (10, 14) for detecting objects that are submerged in a body of water or at least partly buried in a bed of the body of water. According to a first aspect, the apparatus comprises a support structure (16) adapted to be mounted to a remotely operated towed vehicle, ROTV (12),a plurality of acoustic transducers (27.x) mounted to the support structure (16), and at least one magnetic sensor (28.x) mounted to the support structure (16).According to a second aspect, the apparatus comprises a remotely operated towed vehicle, ROTV (12), the ROTV (12) comprising at least one control flap (38.x) operable to control a sub-surface depth of the ROTV (12) when the ROTV (12) is towed in the body of water,a support structure (16) mounted to the ROTV (12), and a plurality of acoustic transducers (27.x) mounted to the support structure (16).The invention further provides a method, a computer system, and a machine-readable medium.
G01V 3/15 - Prospection ou détection électrique ou magnétique; Mesure des caractéristiques du champ magnétique de la terre, p.ex. de la déclinaison ou de la déviation spécialement adaptée à l'utilisation pendant le transport, p.ex. par une personne, un véhicule ou un bateau
G01V 11/00 - Prospection ou détection par des méthodes combinant des techniques spécifiées dans les groupes
G01S 15/89 - Systèmes sonar, spécialement adaptés à des applications spécifiques pour la cartographie ou la représentation
G01V 3/08 - Prospection ou détection électrique ou magnétique; Mesure des caractéristiques du champ magnétique de la terre, p.ex. de la déclinaison ou de la déviation fonctionnant au moyen de champs magnétiques ou électriques produits ou modifiés par les objets ou les structures géologiques, ou par les dispositifs de détection
8.
METHOD OF AND APPARATUS FOR MONITORING POSITIONS ON AN OBJECT
An apparatus monitors positions on an external object having at least one beacon (1 (i), i = 1, 2, I) attached to it. The apparatus has an image sensor (1 1), a lens system (13) and a processing unit (9). The lens system (13) receives at least one light beam (5(i)) transmitted from the at least one beacon (1 (i)) and transfer the at least one light beam (5(i)) to the image sensor (1 1 ). The image sensor (1 1) forms image data. The processing unit (9) identifies the at least one beacon (1 (i)) within the image data based on the at least one light beam (5(i)), determines current location data of the at least one beacon (1 (i)) based on the image data, compares the current location data with former location data of the one or more beacons (1 (i)) as stored in a memory (15) and determines whether the object has moved relative to a fixed reference frame based on the comparison.
G01B 11/00 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques
G01B 11/16 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la déformation dans un solide, p.ex. indicateur optique de déformation
9.
SURVEYING INSTRUMENT FOR AND SURVEYING METHOD OF SURVEYING REFERENCE POINTS
A camera monitors positions on an external object having a beacon (1(i), i = 1, 2,..., I; 130; 430) attached to it. The apparatus has at least one image sensor (120; 321, 322; 420; 520), an imaging optical element (101) for projecting light on the image sensor (120), and a processing unit (9). The imaging optical element (101) may be non-refractive and receives a light beam (5(i); 131) transmitted from the beacon (l(i); 130; 430) and transfers the light beam (5(i); 131) to the image sensor (120; 321, 322; 420; 520). The image sensor (120; 321, 322; 420; 520) forms image data based on the received light beam (5(i); 131) and background light. The processing unit (9) processes the image data such that it filters image data components relating to the background light and renders image data components relating to the light beam.
G01B 11/00 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques
G01B 11/16 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la déformation dans un solide, p.ex. indicateur optique de déformation
G01C 11/06 - Restitution des photos par comparaison de plusieurs photos de la même zone
G01S 1/70 - Radiophares ou systèmes de balisage émettant des signaux ayant une ou des caractéristiques pouvant être détectées par des récepteurs non directionnels et définissant des directions, situations ou lignes de position déterminées par rapport aux émetteu; Récepteurs travaillant avec ces systèmes utilisant des ondes électromagnétiques autres que les ondes radio
G01S 5/16 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de position; Localisation par coordination de plusieurs déterminations de distance utilisant des ondes électromagnétiques autres que les ondes radio
10.
GENERATING AND CLASSIFYING TRAINING DATA FOR MACHINE LEARNING FUNCTIONS
Disclosed are systems, methods and computer readable mediums for generating and applying training data to training data computer learning systems and for autonomous operation of surface and sub-surface vessels. The systems, methods and computer readable mediums can include a data source, the data source providing one or more of vehicle data, operational data, and environmental data and can further include a processor, the processor analyzing at least data from the data source and generating one or more control outputs based at least in part on the analysis.
Method for determining a spatial property of a submerged object in a 3D-space, using an underwater moveable platform, that is provided with a camera and with a position and orientation measurement system configured to output a position and orientation of the camera. The method includes receiving user input for visually fitting a bounding volume to the object, and determining the spatial property of the object based on a corresponding spatial property of a bounding volume once the user is satisfied that the bounding volume sufficiently fits the object. The method provides an interactive manner of visually fitting the bounding volume to the object, based on images of the object taken at different positions and/or orientations of the camera relative to the object, as well as on a representation of a position and orientation of the camera in the 3D space at the time each image was captured.
G01B 21/04 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour mesurer la longueur, la largeur ou l'épaisseur en mesurant les coordonnées de points
G01B 11/00 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques
G06T 7/70 - Détermination de la position ou de l'orientation des objets ou des caméras
12.
SYSTEM AND METHOD FOR THE DEPLOYMENT, TOWING AND RECOVERY OF MARINE EQUIPMENT FROM A WATERBORNE CARRIER
This document describes a system for the deployment, towing and recovery of marine equipment from a waterborne carrier, which carrier comprises a hoisting arrangement for lifting the marine equipment into the water. The system cooperates with the hoisting arrangement, and comprises a lateral deployment-recovery assembly for deployment and recovery on a lateral side of the carrier, and includes: a tow winch and an aft lateral outrigger connected to the carrier. The assembly also comprises a tow line guide and a guider winch including a guide line attachable to the tow line guide. The aft outrigger comprises a seat for the tow line guide and a sheave for the guide line to enable guiding of the tow line guide to the seat. The document also describes a method.
B63B 21/66 - Apparaux de remorquage ou de poussée Équipements spécialement adaptés au remorquage sous l'eau des objets ou des navires, p.ex. carénages hydrodynamiques pour câbles de remorquage
B63B 27/36 - Aménagement des équipements de bord pour l'embarquement ou le débarquement des cargaisons ou des passagers pour les cargaisons flottantes
13.
PORE PRESSURE MONITORING DEVICE AND METHOD FOR MONITORING PORE WATER PRESSURE
The invention relates to a pore pressure monitoring device, for use in geotechnical engineering, adapted to be deployed underground for monitoring pore-water pressure in the ground, comprising a pressure sensor cavity (2) and a pressure sensor means (4), for sensing a fluid (6) pressure of a fluid in the sensor cavity (2), further comprising a degassing means (10), comprising a gas discharge means (14) and a gas-water filter means (12), wherein the gas-water filter means (12) is adapted for providing a route for gas (8) to escape from the fluid (6) in the sensor cavity (2), towards the gas discharge means (14) for discharging the filtered gas (8) to the atmosphere. The invention also relates to a method for monitoring pore-water pressure.
G01L 11/00 - Mesure de la pression permanente, ou quasi permanente d'un fluide ou d'un matériau solide fluent par des moyens non prévus dans les groupes ou
E21B 47/06 - Mesure de la température ou de la pression
E21B 21/08 - Commande ou surveillance de la pression ou de l'écoulement du fluide de forage, p.ex. remplissage automatique des trous de forage, commande automatique de la pression au fond
G01L 1/16 - Mesure des forces ou des contraintes, en général en utilisant les propriétés des dispositifs piézo-électriques
G01L 7/08 - Mesure de la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments mécaniques ou hydrauliques sensibles à la pression sous forme de jauges, élastiquement déformables du type à diaphragme élastique
G01L 9/00 - Mesure de la pression permanente, ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments électriques ou magnétiques sensibles à la pression; Transmission ou indication par des moyens électriques ou magnétiques du déplacement des éléments mécaniques sensibles à la pression, utilisés pour mesurer la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent
14.
A METHOD, A SYSTEM AND A COMPUTER PROGRAM PRODUCT FOR TRANSMITTING SURVEY AND/OR SEISMIC DATA
The invention relates to a method for transmitting survey and/or seismic data from an offshore site to a remotely located site. The method comprises the step of filtering survey and/or seismic data obtained at the offshore site. Further, the method comprises a step of transmitting the compressed survey and/or seismic data via a data transfer channel towards a remotely located server.
G01V 1/22 - Transmission des signaux sismiques aux appareils d'enregistrement ou de traitement
G01S 15/89 - Systèmes sonar, spécialement adaptés à des applications spécifiques pour la cartographie ou la représentation
H04B 1/66 - TRANSMISSION - Détails des systèmes de transmission non caractérisés par le milieu utilisé pour la transmission pour améliorer l'efficacité de la transmission
15.
UNMANNED UNDERWATER VEHICLE AND METHOD FOR CONTROLLING HYDRAULIC SYSTEM
An unmanned underwater vehicle (UUV) with a hydraulic system (100) for use in cold surroundings and method of controlling such hydraulic system. The hydraulic system (100) comprises a hydraulic circuit (10). One or more tools (21,22) may be hydraulically operable via the hydraulic circuit (10). A pump (32) is configured to pressurize a flow of hydraulic fluid (F) via the hydraulic circuit (10) e.g. for actuating the tools (21,22). A valve system (40) comprises control valves (41,42,43) disposed in the hydraulic circuit (10) for controlling the flow of hydraulic fluid (F) through the hydraulic circuit (10). A controller (50) is configured to control one or more of the control valves (43) as a function of a temperature (T) of the hydraulic fluid (F).
A method, system and computer program product for determining soil properties comprising a probe including at least a liquid injection port and a pressure transducer. The probe is pushed into a soil and one or more pumping tests are carried out, wherein during a pumping test infiltration liquid is pumped through the liquid injection port of the probe. By means of the pressure transducer a pressure response in the soil resulting from the injection of liquid through the liquid injection port is measured for each of the one or more pumping tests.
E02D 1/02 - Etude des sols de fondation sur place avant les travaux de construction
E21B 49/00 - Test pour déterminer la nature des parois des trous de forage; Essais de couches; Procédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits
G01N 15/08 - Recherche de la perméabilité, du volume des pores ou de l'aire superficielle des matériaux poreux
A method for authentication of GNSS messages by an authentication transmitter apparatus (20) comprising a reference receiver (22), an authentication server (24) and an authentication transmitter (26). The method comprises: receiving, by the reference receiver, a plurality of navigation messages (50) from a plurality of GNSS satellites (10); hashing, by the authentication server, the navigation messages to create a plurality of hashed messages; creating, by the authentication server, a table comprising the plurality of hashed messages; signing, by the authentication server, the table to create a signed table (70) comprising the hashed messages and acryptographic signature, and transmitting, by the authentication transmitter, the signed table to an authentication receiver apparatus (40). [FIG. 1]
G01S 19/03 - Systèmes de positionnement par satellite à radiophares émettant des messages horodatés, p.ex. GPS [Système de positionnement global], GLONASS [Système global de navigation par satellite] ou GALILEO Éléments coopérants; Interaction ou communication entre les différents éléments coopérants ou entre les éléments coopérants et les récepteurs
The spatial data analysis system for processing spatial data comprises a statistical analysis module (20) and a convolutional neural network (30). The statistical analysis module (20) calculates a discrete two-dimensional spatial distribution (V(k,l)) of at least one statistical measure derived from said spatial data. The spatial distribution defines a statistical measure value of one or more statistical measure for respective raster elements (R(k,l)) in a two-dimensional raster for the data elements derived from the spatial datain the spatial window associated with the raster element. The convolutional neural network (30) is configured to provide object information of objects based on the statistical data.
G06K 9/00 - Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales
G06K 9/46 - Extraction d'éléments ou de caractéristiques de l'image
The present invention relates to a seismic source array for deploying a seismic source array, comprising a housing and a plurality of seismic sources suspending from the housing, each source being configured for generating a pressure pulse signal, wherein the array further comprises a protective structure attached to the housing and defining a protective space near the housing, wherein the seismic sources in a first position relative to the housing suspend from the housing such as to be arranged in the protective space defined by the protective structure, and wherein at least one of the seismic sources suspends from the housing by means of a suspension structure configured for moving the at least one seismic source to a second position relative to the housing, the second position being located outside the protective space.
The invention relates to a method for monitoring remote infrastructure networks. The method comprises the steps of collecting spatially referenced data as physical of an area containing a remote infrastructure network, identifying the remote infrastructure network in the collected physical data, and building a parametrized model of the remote infrastructure network based on the physical data and on operational data, the parametrized model including a spatially referenced model of said remote infrastructure network. Further, the method comprises the steps of storing the parametrized model and updating the parametrized model by assigning updated physical data and/or operational data associated with the remote infrastructure network to at least one parameter of the parametrized model.
G06Q 10/04 - Prévision ou optimisation spécialement adaptées à des fins administratives ou de gestion, p. ex. programmation linéaire ou "problème d’optimisation des stocks"
G06Q 10/06 - Ressources, gestion de tâches, des ressources humaines ou de projets; Planification d’entreprise ou d’organisation; Modélisation d’entreprise ou d’organisation
G06Q 50/06 - Fourniture d'électricité, de gaz ou d'eau
The present document describes a method of hauling an equipment unit from the water onto a carrier. The carrier comprises a hauling ramp, which is arranged for being extended from a loading area into the water. The carrier further includes a first winch, and a suspension structure arranged for being extended outside the carrier over the water and over the hauling ramp. The suspension structure comprises a second winch. The method comprising the steps of: releasing, by the equipment unit, a hauling buoy. The hauling buoy is connected to a tow line extending from the equipment unit, and to a lift line extending from a lifting point on the unit. The method comprises a further step of recovering the hauling buoy from the water, connecting the tow line to the first winch and connecting the lift line to the second winch. Then, the equipment unit is hauled by towing it onto the hauling ramp using the first winch, while simultaneously guiding the equipment unit using the second winch. The method is in particular useful for hauling of an autonomous underwater vehicle (AUV) during bad weather conditions at sea. The document also describes the equipment unit and a system for hauling that can be installed on a carrier, as well as a carrier comprising such a system.
A marine seismic data acquisition system, comprising: a seismic source arrangement comprising: a first seismic source adapted to be towed at a first predetermined depth and a second seismic source adapted to be towed at a second predetermined depth, which is deeper than the first predetermined depth, wherein, in use, the first seismic source transmits pulses, each pulse comprising an upwardly-travelling pressure wavefield, which is reflected at the sea/air interface to become a downwardly-travelling ghost pressure wavefield, and a downwardly-travelling primary pressure wavefield, and the second seismic source transmits pulses, each pulse comprising an upwardly-travelling pressure wavefield, which is reflected at the sea/air interface to become a downwardly-travelling ghost pressure wavefield, and a downwardly-travelling primary pressure wavefield, and wherein the first predetermined depth and the magnitude of the peak pressure of the upwardly-travelling pressure wavefield produced by the first seismic source are selected to create an anelastic region at the sea surface having a reflection coefficient of between - 0.45 and 0, the system further comprising a receiver for receiving the pulses transmitted from the seismic source arrangement and for extracting data from within a predetermined frequency band of interest.
G01V 1/38 - Séismologie; Prospection ou détection sismique ou acoustique spécialement adaptées aux zones recouvertes d'eau
G01V 1/387 - Réduction de la bulle d'impulsion secondaire, c. à d. réduction des signaux détectés résultant de la production et de la libération des bulles de gaz après l'explosion initiale
A system comprising: a survey vessel; a streamer comprising a cable, a first set of N1 sensor groups positioned at a first end portion of the cable and a second set of N2 sensor groups positioned at a second end portion of the cable, the sensor groups of each set being spaced from each other by a group interval; a sound source; wherein the survey vessel travels at a predetermined speed, towing the streamer and the sound source such that the sound source is positioned between the first and second end portions of the cable; the sound source sends acoustic pulses at a predetermined period between pulses towards the seabed; and the speed of the survey vessel and the predetermined period of the sound source are selected such that the shot point interval of the sound source equals the group interval.
An underwater positioning system (1) provides position information for a rover (2), moveable within a reference frame. The system may comprise: at least one beacon (4) having a light source (30), located at a fixed position within the reference frame; an underwater imaging device (10), moveable with the rover in the reference frame to observe the light source from different viewpoints and determine direction data representing a direction or change in direction of the light source with respect to the imaging device; an orientation sensor (14), associated with the imaging device to determine an orientation of the imaging device with respect to the reference frame and generate orientation data; and a scaling element (12,28,111,113,115,330a-c) for providing scaling data representative of a distance between the imaging device and the light source. Various different beacons may be provided. In alternative system implementations, the locations of light source(s) and underwater imaging device are reversed between rover and beacon(s).
G01S 1/70 - Radiophares ou systèmes de balisage émettant des signaux ayant une ou des caractéristiques pouvant être détectées par des récepteurs non directionnels et définissant des directions, situations ou lignes de position déterminées par rapport aux émetteu; Récepteurs travaillant avec ces systèmes utilisant des ondes électromagnétiques autres que les ondes radio
G01S 5/16 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de position; Localisation par coordination de plusieurs déterminations de distance utilisant des ondes électromagnétiques autres que les ondes radio
B63C 11/40 - Chambres de plongée reliées mécaniquement à une base, p.ex. par un câble du type fermé adaptées à un travail particulier
G05D 1/02 - Commande de la position ou du cap par référence à un système à deux dimensions
G05D 1/06 - Régime de modification de l'altitude ou de la profondeur
An image acquisition unit for obtaining data to generate at least one three-dimensional representation of at least one underwater structure is disclosed. The image acquisition unit includes a unit body, a plurality of cameras, a first laser light device, and a second laser light device. The first laser light device can operate based on a first illumination setting. The second laser light device can operate based a second illumination setting. The first and second cameras can be configured to capture light during the first illumination setting and generate a first set of data representative of the first laser projecting on the at least one underwater structure at a predetermined scan rate. The third and fourth cameras can be configured to capture light during the second illumination setting and generate a second set of data representative of the second laser projecting on the at least one underwater structure at the predetermined scan rate.
G01B 11/245 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes en utilisant plusieurs transducteurs fixes fonctionnant simultanément
G01B 11/25 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes en projetant un motif, p.ex. des franges de moiré, sur l'objet
A remote tracking device is provided for issuing a tracking signal containing position related data representing the momentary position of the tracking device, to a user station. The remote tracking device comprises a GNSS receiver and a GNSS antenna for receiving satellite positioning signals, a processor for converting the satellite positioning signals into position related data and a UHF transmitter and a UHF antenna for transmitting the tracking signal. The UHF antenna comprises an inner conducting cylinder and an outer conducting cylinder spaced from and encircling the inner conducting cylinder. As a result of this antenna configuration, improved omni-directional vertically polarized transmission characteristics are achievable without compromising the positioning of the GNSS antenna. By enclosing the electronic components within the inner conducting cylinder a compact design is achieved.
A system for measuring the attitude of an object in a fixed frame of reference from a moving frame of reference, comprising a first imaging device for producing image data for the object from a first direction, a second imaging device for producing image data for the object from a second direction having a component perpendicular to the first direction and an attitude sensing arrangement for determining an attitude of the first and second imaging devices with respect to the fixed frame of reference at the time the respective images are taken and for generating attitude data. An image processing system analyses and combines the respective image data and attitude data to determine the attitude of the object. The system is particularly useful for determining attitude of offshore piles during piling operations or for monitoring the departure angles of pipes and cables during laying thereof.
GNS signal correction system (2) and method for calculating GNSS corrections, and complementary mobile (30) and mobile position (Rm) determination method based on these GNSS corrections. The methods employ satellite-single-differenced mixed code-and-phase system hardware delays (dr) in modelling carrier phase system observables (Φr). These system hardware delays (dr) are dynamically estimated by the signal correction system (2) using a dynamic system state model. The estimated system hardware delays (dr) are transmitted to the mobile (30), which applies these delays to a dynamic mobile state model, in order to improve the accuracy and/or convergence time of mobile position estimations.
G01S 19/43 - Détermination de position utilisant l'interférométrie à ligne de base longue ou courte
G01S 19/07 - Systèmes de positionnement par satellite à radiophares émettant des messages horodatés, p.ex. GPS [Système de positionnement global], GLONASS [Système global de navigation par satellite] ou GALILEO Éléments coopérants; Interaction ou communication entre les différents éléments coopérants ou entre les éléments coopérants et les récepteurs fournissant des données pour corriger les données de positionnement mesurées, p.ex. DGPS [GPS différentiel] ou corrections ionosphériques
brevets
