The present disclosure relates to a frequency selective camouflage material comprising a backing and a conductive material. The conductive material is patterned onto said backing to form a plurality of regions of conductive material, wherein each region of conductive material is electrically isolated from other regions of patterned conductive material. Each region of patterned conductive material has a diameter in the range of 5 mm to 300 mm. Said camouflage material has a transmittance of at least 60% for electromagnetic radiation having a frequency below 200 MHz and at most 40% for electromagnetic radiation having a frequency in the range of 8-20 GHz.
F41H 3/00 - Camouflage, c. à d. moyens ou procédés de dissimulation ou de simulation
H01Q 17/00 - Dispositifs pour absorber les ondes rayonnées par une antenne; Combinaisons de tels dispositifs avec des éléments ou systèmes d'antennes actives
2.
LINER FOR A SHAPED CHARGE AND METHOD FOR MANUFACTURING A LINER
A liner (100) for a shaped charge (10) comprising an inner layer (120) made of a material having a density below 10.5 g/cm3, and an outer layer (110) made of a material having a density below 2.0 g/cm3, wherein the outer layer is formed directly on the inner layer. In a first state, both the inner layer (120) and the outer layer (110) are compressed towards the symmetry axis (x) of the liner, thereby forming a projectile. In a second state, the inner layer forms a penetration jet (120') of the projectile and the outer layer forms a slug (110') of the projectile. The melting point of the outer layer (110) is above 100 °C. The invention also concerns a shaped charge (10) comprising said liner (100), a method for manufacturing the liner (100) and a method for detonation of the shaped charge (10).
The present invention relates to a fragmentation warhead, comprising: an inner casing accommodating explosive charge; a fragmentation casing at least partly surrounding the inner casing; and an outer casing arranged outside the inner casing and the fragmentation casing; wherein the inner casing consists of a front liner and a rear liner, which are connected to each other and wherein the fragmentation casing comprises a molded casing with integrated metal elements.
F42B 12/32 - Projectiles ou mines caractérisés par la charge militaire, l'effet recherché ou le matériau caractérisés par la nature de la charge militaire ou par l'effet recherché du type à explosif brisant à structure de corps de fragmentation l'enveloppe ou la paroi du projectile contenant un ensemble de corps individuels encastrés, p.ex. de sphères en acier
4.
A CAMOUFLAGE TAPE, AND CAMOUFLAGE TAPE SYSTEM FOR TEMPORARY MULTISPECTRAL CAMOUFLAGE OF OBJECTS
The present disclosure relates to a multispectral camouflage tape for temporary multispectral camouflage of objects, such as weapons or military, comprising a camouflage material layer having camouflage properties in the visual and thermal infrared wavelength regions, the camouflage material layer comprising a textile and a thermal-radiation reflecting material; a tape layer comprising a tape substrate having an inward-facing side coated with an inner adhesive layer; and a releasable liner layer releasably adhered to the inward-facing side of the tape substrate through the inner adhesive layer, wherein the camouflage material layer is adhered to the tape substrate such that the camouflage material layer and the tape layer form a tape configured to adhered to an object by the inner adhesive layer at an inward-facing side of the tape substrate, after removal of the release liner layer.
A shaped charge assembly, comprising a casing (2) and a liner (3), is disclosed. The liner (3) comprises a first longitudinal section (4) connected to the casing, a second longitudinal section (5) having the shape of a truncated cone wherein the truncated end (5b) thereof is directly connected, or connected by means of an intermediate longitudinal section 7, to the first longitudinal section (4). The second longitudinal section (5) is at its base end directly connected to a third longitudinal section (6). The third longitudinal section is in the shape of a cone, an ogival or a hemisphere.
The present disclosure relates to a composition for providing a camouflage coating, the composition comprising a) an aqueous polyolefin binder dispersion; b) a low-emissive pigment; and c) a matting agent. The matting agent c) is a thermoplastic polymer matting agent. The disclosure further relates to a method of producing a low-emissive textile product using such a composition, as well as low-emissive textile products and camouflage products produced using the composition.
The invention relates to a heat generating arrangement (1) and a method for generation of heat to be used in a heat consumer (4). The heat generating arrangement (1) uses combustion of aluminium and hydrogen to raise the temperature of superheated steam inside the heat generating arrangement (1). The heat in the superheated steam can thereafter be used in a heat 5 consumer (4), such as a heat exchanger.
F01K 3/18 - Ensembles fonctionnels caractérisés par l'emploi d'accumulateurs de vapeur ou de chaleur ou bien de réchauffeurs intermédiaires de vapeur comportant des réchauffeurs
C01B 3/02 - Production d'hydrogène ou de mélanges gazeux contenant de l'hydrogène
F01K 21/04 - Ensembles fonctionnels de machines motrices à vapeur non prévus ailleurs utilisant un mélange de vapeur et de gaz; Ensembles fonctionnels produisant ou surchauffant de la vapeur en mettant en contact direct l'eau ou la vapeur avec des gaz chauds
F01K 25/00 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleurs; Ensembles fonctionnant selon un cycle fermé, non prévus ailleurs
F24V 30/00 - Appareils ou dispositifs utilisant la chaleur produite par des réactions chimiques exothermiques autres que la combustion
8.
PIEZOELECTRIC SENSOR ARRANGEMENT AND A METHOD OF DISCRIMINATING SIGNALS
The present invention relates to a piezoelectric sensor arrangement for use in a projectile (2) comprising a piezoelectric sensor (6) enveloped by a damping layer (5) adapted to attenuate signals of frequencies above a predetermined cutoff frequency whereby the voltage output signal (9) of the piezoelectric sensor (6) upon impact on a desired hard target can be discriminated from voltage output signals (8) originating from impact on undesired soft objects. The invention also relates to a method of discriminating voltage outlet signals (8, 9) by means of the piezoelectric sensor arrangement described herein. The invention also relates to the use of a piezoelectric sensor arrangement in a projectile to safeguard unintentional detonation does not occur.
A method for determining a synthetic aperture of a synthetic aperture radar, SAR, system using information from a global navigation satellite system, GNSS, which includes a plurality of satellites each transmitting a radio frequency signal comprising a unique pseudo random number, PRN is disclosed. The method comprises: receiving the radio frequency signal from a group of satellites in the GNSS, determining a first maximum correlation peak of the PRN of the received radio frequency signal from each satellite, determining phase shift between the first determined maximum correlation peak and a second determined maximum correlation peak of a received PRN from the same satellite at a later time, for each satellite, determining a line-of-sight, LOS, movement of the SAR system relative each of the satellites in the group of satellites and determining a synthetic aperture using the LOS movement relative each satellite in the group of satellites.
G01S 19/39 - Détermination d'une solution de navigation au moyen des signaux émis par un système de positionnement satellitaire à radiophares le système de positionnement satellitaire à radiophares transmettant des messages horodatés, p.ex. GPS [Système de positionnement global], GLONASS [Système mondial de satellites de navigation] ou GALILEO
The invention concerns a system (100) and a method for estimating the geographic position of a target (1). The method comprises the following steps: detecting a target (1); determining the characteristics of the target (1), which characteristics at least comprise a geographic position (3) and a category of the target; tracking the detected target (1) until at least one certain predetermined criteria is not fulfilled, wherein said criteria is associated to the level of certainty for determining the geographic position (3) of the target (1). The method further comprises determining a first point in time t1 when the predetermined criteria was last fulfilled, wherein, for a second point in time t2 the following step is performed: creating a pattern (2) defining at least one possible geographic position (3) of the target (1), said pattern (2) extends at least partially around the geographic position (3) of the target (1) at t1, wherein the dimension of said pattern (2) is determined based on at least one predetermined parameter.
G01S 13/00 - Systèmes utilisant la réflexion ou la reradiation d'ondes radio, p.ex. systèmes radar; Systèmes analogues utilisant la réflexion ou la reradiation d'ondes dont la nature ou la longueur d'onde sont sans importance ou non spécifiées
G01S 17/66 - Systèmes de poursuite utilisant d'autres ondes électromagnétiques que les ondes radio
11.
METHOD AND SYSTEM FOR DETERMINING POSSIBLE GEOGRAPHIC POSITIONS OF AN ASSUMED UNDETECTED TARGET
A sensor surveillance system (100) and a method for determining possible geographic positions of at least one assumed undetected target (la-n) within a geographic volume of interest (200) is provided, wherein for a first point in time ti the following steps are performed: dividing the geographic volume of interest (200) into sections (10); assuming the existence of an assumed undetected target (la-n) at a geographic position within each section (10); and initiating the creation of a pattern (2) defining at least one possible geographic position of the assumed undetected target, said pattern extends at least partially around the geographic position of the assumed undetected target (la-n); wherein the geographic extension of said pattern is determined based on: the category of the assumed undetected target (la-n); and the amount of time that has passed from the first point in time tl. Further, for a second point in time t2 the following steps are performed: determining geographic locations (205) within said geographic volume of interest (200) from where sensor signals show absence of targets; and removing the pattern (2) from the geographic locations (205) from where sensor signals show absence of targets.
G01S 13/00 - Systèmes utilisant la réflexion ou la reradiation d'ondes radio, p.ex. systèmes radar; Systèmes analogues utilisant la réflexion ou la reradiation d'ondes dont la nature ou la longueur d'onde sont sans importance ou non spécifiées
G01S 17/66 - Systèmes de poursuite utilisant d'autres ondes électromagnétiques que les ondes radio
The present disclosure relates to a breech (103) for noise reduction in a recoil-less weapon (100). The breech (103) is adapted to be arranged in fluid communication with a launcher (102) of the weapon (100) to release exhaust gas. The breech (103) comprises a venturi tube. The venturi tube has an inlet at a first end adapted to be connected to the launcher, and an outlet for releasing the exhaust gas at a second end, wherein the area of the outlet is larger than the area of the inlet. The venturi tube further comprises an exhaust gas controlling element formed at the venturi tube structure. The exhaust gas controlling element is arranged to control the release of exhaust gas so as to decrease a sound pressure peak at the weapon. The inner envelope surface of the venturi tube is configured, such that the inner envelope surface does not alter or at least has a very small influence on recoil characteristics of the weapon. The present disclosure also relates to recoil-less weapons comprising a breech according to the present disclosure, as well as methods for manufacturing a breech according to the present disclosure.
The present invention relates to an arrangement for aligning a sub-calibre barrel (1) for use in a principal weapon barrel comprising i) an insert (4) arranged in said principal weapon barrel ii) front securing means (8) for aligning the sub-calibre barrel (1) iii) rear securing means for securing the rear end of the sub-calibre barrel (1), wherein iii.a) said rear securing means comprise a barrel nut (2) in which said sub-calibre barrel (1) is inserted; iii.b) clamping means (3a, 3b) securing said barrel nut (2) to said insert (4) and said clamping means (3a, 3b) in said principal weapon barrel. The invention also relates to a training weapon comprising the arrangement and a method of aligning the training weapon.
The present invention relates to an arrangement for improving shooting accuracy of a weapon comprising i) a barrel 13, ii) at least one component iii) a holding device mounted on said barrel 13, said holding device comprising means for holding 1a said at least one component allowing said at least one component to be displaced relative to and in parallel with the barrel and the means for holding from 1 mm to 200 mm during which displacement said at least one component does not absorb any substantial recoiling forces.
The invention relates to a method for launching a projectile and a launcher comprising a barrel (1) accommodating a. a projectile (2); b. a rocket motor (13) at the rear end of the projectile (2) comprising a first compartment containing a first propellant; c. a countermass (3) at the rear end of the barrel (1); and d. a second compartment between the rocket motor (13) and the countermass (3) containing a second propellant, wherein said first and second compartments form a high pressure chamber (6) subsequent to firing of the projectile (2).
F41A 1/10 - Canons sans recul, c. à d. armes à feu munies d'un système de propulsion qui ne produit pas de recul utilisant un projectile antagoniste pour équilibrer le recul
F42B 5/05 - Cartouches, c. à d. projectile et douille avec charge propulsive formant un tout pour les canons sans recul
F42B 5/10 - Cartouches, c. à d. projectile et douille avec charge propulsive formant un tout avec balle autopropulsée
The present invention relates to a counter mass container (2) enclosing a plurality of parallel axially extending channels (1). The invention also relates to an assembly of a plurality of such counter mass containers (2). The invention also relates to a weapon comprising a barrel (5) accommodating such an assembly.
F41A 1/10 - Canons sans recul, c. à d. armes à feu munies d'un système de propulsion qui ne produit pas de recul utilisant un projectile antagoniste pour équilibrer le recul
17.
METHOD AND SYSTEM FOR OPERATING AN IFF/SSR ANTENNA
An antenna system for providing identification functionality comprising a main antenna and an auxiliary antenna, wherein the antennas are configured to at least transmit electromagnetic waves. The antenna system comprises a first channel interface and a second channel interface, a first switch and a transmission input means. The first switch is configured to switch between a first operation mode and a second operation mode. When set in the first operation mode the second channel interface is set to be in connection with the auxiliary antenna and when set in the second operation mode the second channel interface is set to be in connection with the main antenna. If transmission via the first transmission channel is expected the transmission input means is configured to set the first switch in the first operation mode. Thereby the main antenna can be used for transmission of signals both provided via the first and second channel interfaces and when transmission via the first and second channel interfaces simultaneously is required the signal provided via the first channel interface will be transmitted by the main antenna and the signal provided via the second channel interface will be transmitted by the auxiliary antenna.
G01S 13/78 - Systèmes utilisant la reradiation d'ondes radio, p.ex. du type radar secondaire; Systèmes analogues dans lesquels des signaux de type pulsé sont transmis effectuant la discrimination entre différents types de cibles, p.ex. radar pour l'identification ami–ennemi
G01S 7/03 - 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 - Détails de sous-ensembles HF spécialement adaptés à ceux-ci, p.ex. communs à l'émetteur et au récepteur
The present disclosure relates devices and a method for monitoring a display image (2) in a transparent optical projection display. They disclose a display image monitor (1) comprising a fiber optic face plate (4) and an image sensor (5). The fiber optic face plate (4) comprises a first surface (4a) with optic fiber ends and a second surface (4b) with corresponding optic fiber ends and transfers light from the first surface (4a) to the second surface (4b) through the optic fibers, wherein the first surface abuts against a part (2a) of the display image (2) at a focused image plane (2b) and thus the light of the part of the display image enters the optic fiber ends and wherein the second surface is arranged to direct the part of the display image to the image sensor, thereby transferring the part of the display image to the image sensor.
A method for managing the spatial reuse of slots in a mobile network comprising several nodes Ni, said network comprising one or more Potentially Disruptive Nodes (PDN), said nodes Ni and PDN comprising a local table, a global table, and a summary of the global table comprising the interleaving of two sub- cycles: .cndot. a first sub-cycle, the normal S-cycle, where S-SLOTs are all assigned statically and where each node has one or only one S-SLOT allocation, .cndot. a second sub-cycle, the improved S-cycle, where each node has one S-SLOT assigned statically, and where for all nodes except PDN nodes, one or more additional S-SLOTs is assigned dynamically when topology makes it possible, dynamic S-SLOT allocation being equitably shared in a 2-hop neighbourhood, and determined by performing S-SLOT spatial reuse.
The present invention relates to a distributed avionics system (100, 500) having a plurality of computer nodes arranged to execute a plurality of partitions/applications (P1, P2, P3, P4, P5, P6). The distributed avionics system comprises reconfiguration means (332) arranged to reconfigure the distributed avionics system upon detection of failure in at least one of the computer nodes. Each partition/application is associated to a application/partition availability level. The reconfiguration means are arranged to reconfigure the distributed avionics system based on the partition/application availability levels of the partition/applications (P1, P2, P3, P4, P5, P6). The present invention further relates to a method for back-up handling in a distributed avionics system having a plurality of computer nodes (A, B, C).
G06F 11/20 - Détection ou correction d'erreur dans une donnée par redondance dans le matériel en utilisant un masquage actif du défaut, p.ex. en déconnectant les éléments défaillants ou en insérant des éléments de rechange
21.
A THREE DIMENSIONAL MODEL METHOD BASED ON COMBINATION OF GROUND BASED IMAGES AND IMAGES TAKEN FROM ABOVE
The present invention relates to a three dimensional model method based on combination of ground based images (54) and images (44) taken from above. According to the invention an existing 3D model (46) based on images (44) taken from above is matched with images (54) taken from ground level, all images comprising information about position and attitudes of the camera when the images (54) from ground level and the images (44) taken from above were taken and direction of each pixel. The method offers an automatically carried out imaging solving or at least mitigating occlusion problems.
The present invention relates to an automated three dimensional mapping method estimating tree dimensional models taking advantage of a plurality of images. The object of the invention is to eliminate or at least reduce the need of smoothing and as a consequence increase the stability of a 3D model avoiding blur. According to the method the positions (x, y, z) and attitudes (a, ß, ?) for at least one camera is recorded when images are taken, the at least one camera is geometrically calibrated to indicate the direction of each pixel of an image, a stereo disparity is calculated (42) for a plurality of image pairs covering a same scene position setting a disparity and a certainty measure estimate for each stereo disparity, the different stereo disparity estimates are weighted together (43) to form a 3D model, and the stereo disparity estimates are reweighted automatically and adaptively based on the estimated 3D model.
G06T 7/579 - Récupération de la profondeur ou de la forme à partir de plusieurs images à partir du mouvement
H04N 13/122 - Raffinement de la perception 3D des images stéréoscopiques par modification du contenu des signaux d’images, p.ex. par filtrage ou par ajout d’indices monoscopiques de profondeur
H04N 13/128 - Ajustement de la profondeur ou de la disparité
The invention regards a de-icing/anti-icing system comprising at least two conductive structures (3', 3") embedded in an article (2), which includes an outer surface (5) being designed as an aerodynamic surface, at least one of the conductive structures (3'f 3") is arranged adjacent the outer surface (5), a control unit (39) is adapted to control the energy supply to the conductive structures (3', 3") for generating heat to the outer surface (5) One conductive structure (31) comprises a first conductive nano structure (19'), the conductive structure's (3') conductive property differs from the conductive property of the other conductive structure (3") comprising a second conductive nano structure (19").
B64D 15/12 - Dégivrage ou antigivre des surfaces externes des aéronefs par chauffage électrique
H05B 3/14 - Eléments chauffants caractérisés par la composition ou la nature des matériaux ou par la disposition du conducteur caractérisés par la composition ou la nature du matériau conducteur le matériau étant non métallique
24.
A METHOD AND AN ARRANGEMENT FOR ESTIMATING 3D MODELS IN A STREET ENVIRONMENT
The present invention relates to a method for estimating 3D-models in a street environment using stereo sensor technique, the sensors comprised being arranged in pairs. The invention also refers to an arrangement for estimating 3D-models in a street environment using stereo sensor technique, comprising at least one pair of sensors (16, 17, 18) mounted on a bracket (33), each pair of sensors being positioned in a common plane. The invention solves the problem to measure stereo effects under difficult contrast conditions. According to the invention a method is proposed that ensures that the sensors of each pair comprised, are positioned based upon contrast information such that low levels of contrasts in an image plane are avoided. An arrangement is also proposed that involves that comprised pairs of sensors (16, 17, 18) are mutually positioned relative to an essentially horizontal plane (22) of the bracket (33) such that the sensors (16a, 16b, 17a, 17b, 18a, 18b) of a sensor pair (16, 17, 18) is positioned horizontally at a distance from each other and one of the sensors above the horizontal plane of the bracket (33) and the other under the horizontal plane (22).
H04N 13/243 - Générateurs de signaux d’images utilisant des caméras à images stéréoscopiques utilisant au moins trois capteurs d’images 2D
H04N 13/25 - Générateurs de signaux d’images utilisant des caméras à images stéréoscopiques utilisant plusieurs capteurs d’images aux caractéristiques différentes autres que la position ou le point de vue, p.ex. avec des différences dans la résolution ou les propriétés de saisie de couleurs; Commande des caractéristiques d’un capteur par les signaux d’images d’un autre capteur
25.
RADAR SYSTEM AND METHOD FOR A SYNTHETIC APERTURE RADAR
The invention provides a radar system for a Synthetic Aperture Radar, SAR, comprising an arrangement of at least one transmitter, two receivers, two antennas and signal processing means located on a platform. The platform is arranged to move over ground and arranged to transmit a known signal shape and receive signals reflected from the ground. The received signals are used to produce a SAR image of the ground. The SAR image comprises a number of resolution cells. The radar system is further arranged to operate in a frequency band with a centre frequency f c and with a wide bandwidth B of at least one octave wherein the radar system comprises a first and a second antenna having a length of less than half the wavelength of the centre frequency f c. The radar system is further arranged for: .cndot. a radar system transfer function F f to be flat over the frequency band B and .cndot. one-sided beam forming with wideband antenna gain. The invention also provides a corresponding method.
G01S 13/90 - Radar ou systèmes analogues, spécialement adaptés pour des applications spécifiques pour la cartographie ou la représentation utilisant des techniques d'antenne synthétique
26.
SYSTEM AND METHOD FOR MIXING A SCENE WITH A VIRTUAL SCENARIO
The present invention relates to a system (100) and method for mixing a scene with a virtual sce-nario. The system comprises image capturing means arranged to capture at least one image so as to cover the scene from a first viewpoint, and an image representation generation unit arranged to generate at least one im-age representation based on said cap-tured image. The system comprises further a game engine unit (140) ar-ranged to generate a virtual scenario, an image processing unit (150) ar-ranged to adapt the at least one image representation based on said generated virtual scenario so as to provide a vir-tual video sequence.
The present invention relates to a countermass weapon comprising a launching tube open or openable in both ends, the launching tube housing a launchable unit such as a rocket, a projectile, a shell or the like, a countermass, a pressure chamber, a propellant charge that upon firing and combustion of the charge in cooperation with the pressure chamber and the countermass accelerates the launchable unit forwards in the tube at the same time as the countermass accelerates backwards in the tube, and a firing and supporting unit connected to the outside of the launching tube. The object of the invention is to obtain a weapon that is less complicated to manufacture and thus less expensive and that at the same time avoids possible recoil problems for the gunner and makes the weapon safer for the gunner and other persons involved. The object of the invention is obtained by a countermass weapon characterized in that the countermass is designed such that a forward directed recoil is obtained and that the launching tube is designed to be disengageable from the firing and supporting unit during the forward directed recoil.
F41A 1/10 - Canons sans recul, c. à d. armes à feu munies d'un système de propulsion qui ne produit pas de recul utilisant un projectile antagoniste pour équilibrer le recul
F41F 3/045 - Lanceurs de roquettes ou de torpilles pour roquettes adaptés pour être transportés et utilisés par une personne, p.ex. bazookas
The present invention relates to a method for displaying a virtual image of three dimensional objects in an area using stereo record-ings (23) of the area for storing (24) a pixel and a height for each point of the area. The object of the invention is to obtain a method enabling display-ing of vertical surfaces or even slightly downwards and inwards inclined surfaces. The object is obtained by a method using stereo recordings from at least three different stereo recordings of different solid angles. For each different solid angle at least one database comprising data about texture and height pixel-pointwise is established. Data for displaying the virtual image are combined (26) from the different databases in dependence of the direc-tion in which the virtual image is to be displayed (27).
G02B 30/50 - Systèmes ou appareils optiques pour produire des effets tridimensionnels [3D], p.ex. des effets stéréoscopiques l’image étant construite à partir d'éléments d'image répartis sur un volume 3D, p.ex. des voxels
G06T 7/593 - Récupération de la profondeur ou de la forme à partir de plusieurs images à partir d’images stéréo
H04N 13/264 - Générateurs de signaux d’images avec conversion d’images monoscopiques en images stéréoscopiques utilisant le mouvement relatif d’objets dans deux trames ou champs vidéo
H04N 13/271 - Générateurs de signaux d’images où les signaux d’images générés comprennent des cartes de profondeur ou de disparité
29.
ARRANGEMENT AND METHOD FOR PROVIDING A THREE DIMENSIONAL MAP REPRESENTATION OF AN AREA
The present invention relates to an arrangement (201) and a method for providing a three dimensional map representation of an area. The arrangement comprises an image generating unit (204) and a processing unit (206). The image generating unit (204) is arranged to generate time recorded images. The image generating unit (204) is arranged to provide a plurality of at least partly overlapping images each covering at least a part of said area. The processing unit (206) is arranged to stereo process an arbitrary number of at least partly overlapping image sets generated by said image generating unit so as to provide said three dimensional map representation. The arrangement is characterized in that a navigation unit (205) is arranged to output time recorded navigation states related to the image generating unit (204), and in that the processing unit (206) is arranged to, for each time recorded image to be stereo processed, associate the navigation states relating to a corresponding time record.
The present invention can be summarized by use of a diffraction limited SAR giving large integration angle and a short depth of field which gives that energy from underground targets is focused independently at different depths to enable 3d imaging. The radar device according to the invention should be implemented by considering the following parameters: Choice of the appropriate illumination geometry, i.e. elevation angle .theta., and the appropriate use of low frequency diffraction limited SAR processing to obtain 3D imaging, and the choice of an appropriately low radar frequency.
G01V 3/12 - 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 par ondes électromagnétiques
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 3/16 - 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 spécialement adaptée à la prospection aérienne
G01S 13/90 - Radar ou systèmes analogues, spécialement adaptés pour des applications spécifiques pour la cartographie ou la représentation utilisant des techniques d'antenne synthétique
A transmitting unit (1) has a transmitter for transmitting signals of coded information about a position (12) close to the unit in a space substantially unreachable by a satellite-based navigating system so as to provide a receiver (22) arranged on a moving object (21) present in said space with this position information for determining the position of this object. The transmitter is adapted to normally be in an inactive non-transmitting state, and the unit further comprises means adapted to detect movement of a said object within said space and activate the transmitter to transmit said signals only when a movement of a said object in said space is detected. (Fig 1).
G01S 1/00 - 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
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
G09B 9/00 - Simulateurs pour l'enseignement ou l'entraînement
brevets
