The present invention relates to a method of forwarding messages over a network. The message forwarding method is implemented in a router (101a to 101g) of a distributed network (100) comprising, at the level of the OSI layer 7, at least one sub-network (102a to 102c) being constrained, the method comprising at leas...

The invention is applicable to the field of circular-polarized planar wire antennas for very wide band telecommunications systems. It relates to an antenna reflector (3) for such an antenna (2), an antenna device comprising the antenna reflector (3) and the antenna (2), and a method for implementing the antenna ...

The invention concerns a device for measuring a distance of a target by means of a rangefinder (1) comprising: a laser pulse transmitter (2)  a receiver (3) for the laser echoes (31) backscattered by the target comprising a spatial detection device (10) that comprises at least one photodiode mounted as an integrator...

The invention concerns a device and method for calibrating the power measurement of a wideband radio frequency receive chain capable of receiving radio frequency signals via a reception antenna. The calibration device comprises said wideband radio frequency receive chain and a processing module capable of performing...

A piece of airborne optoelectronic equipment (EO, EO1, EO2) comprising: - at least one image sensor (CI1, CI2), designed to acquire a plurality of images (IMR1, IMR2) of a region (RS) flown over by a carrier (PO1, PO2) of said equipment; and - a data processor (PD) configured or programmed to receive at least one so...

System allowing automatic détection of the end of winding of a cable ( 11) on a winch. The System com prises an optical detector (14) which emits in the direction of the cable a light beam (13) which illuminâtes a given zone through which the cable travels in the course of its winding. The detector is associate...

The device for deploying and aiming structural elements designed to be placed in Earth orbit comprises: ■ at least one locking/unlocking device making it possible to deactivate the first coupling mode and to activate a second coupling mode allowing a portion of the device to be aimed at a target. The device use...

The invention relates to a wire antenna for submarines (4) comprising a coaxial cable (6) and a radiating element (8), one end of which is connected to the coaxial cable and dimensioned for transmitting high frequency waves, between 3 MHz and 30 MHz. The antenna (2) comprises at least one isolation filter (14) po...

The present invention relates to the field active electronic scanning radar systems. It provides an architecture for active antenna radar based on a functional unit, the elementary radar unit. The elementary radar unit comprises all of the functions required for generating N independent radar channels. In this regar...

The invention relates to a self -testing metrologic system for an analog signal- transmitting device (4) capable of transmitting said analog signal in pulsed mode or continuous, mode according to a specific template comprising temporal modulation information , having a power and frequency characterizing said transmi...

The invention relates to a system adapted for providing an operator with augmented visibility useful in particular to aid aircraft piloting comprising at least one sensor able to capture image data in a given spectral band and a central calculation unit able to process the image data captured and to transmit them to...

According to the invention the electronic scanning antenna consists of: an array of radiating elements placed in an initial geometric configuration at a reference temperature (T0) geometric configuration models of said temperature dependent array having been pre-established. The orientation of said beam is carried...

The deformable reflecting membrane (5) comprises, in thickness, an alternating superposition of layers of conductive elastomer (10) and at least two reinforcing layers (11), each reinforcing layer being divided up into individual patches spaced apart from one another and distributed periodically in the plane of the ...

The present invention relates to a method for generating cryptographic half-keys. The method makes it possible to generate n pairs (Ki1, Ki2), 1

The invention relates to a device for improving the fault tolerance of a processor (100) installed on a motherboard, the said motherboard comprising memory units (102, 103, 104) and a data input/output interface (105), the said processor (100) being able to execute at least one application (201), the said de...

A method for controlling the routing of a data stream through a meshed and encrypted network, comprising at least the following steps: a) tagging each data packet with the value of its class of service, said tagging being inserted into a QoS field of the header of said packet; b) configuring the encryption device (1...

The invention relates to a process that makes it possible to generate an encryption key used for encoding data exchanged between a first user and a second user characterized in that the key is determined on the basis of the measurements of the transmit channel.

This system (110) is adapted for placing at least one contactless medium reader (17) in communication with at least one contactless medium (19) designed to be read by the or each reader (17). For this purpose the system for placing in communication (110) comprises: at least one upstream magnetic coupling device (130...

The invention relates to a process for producing a printed circuit board comprising at least two elementary circuits (CE1,CE2) drilled with metallised holes (T) the apertures of which are covered with a first metal and at least one first intermediate layer (Cl1) made of a compressible material drilled with holes (T)...

The present invention relates to a method for identifying a facility on the ground or at sea, the method being implemented on an airborne responder linked to at least two antennas, the method comprising a step of choosing a first transmission antenna (102) and then a step of transmitting an interrogation message fro...

The present invention relates to the field of wideband microwave circuits housed in a package. The present invention more particularly relates to an electromagnetic protection device 20 able to protect a microwave connection 21 between a coaxial microwave connector housed on a package and at least one element of a m...

The invention relates to an acoustic antenna element for receiving and/or emitting low frequency waves under water the antenna element comprising an acoustic panel (4) formed by at least one acoustic sensor enclosed in a flexible shell said acoustic panel (4) being generally rectangular and being fitted against a su...

The invention relates to a system (1000) for monitoring access to a restricted area which includes at least one monitoring device (1020) for monitoring the entrance to and/or exit from the restricted area by users using a pedestrian gate (1022) that is specific to the monitoring device (1020) the monitoring device...

The invention relates to a laser source capable of emitting energy pulses greater than or equal to 100 terawatts consisting of a laser system including the following cascaded elements: a solid state laser oscillator (1); a first amplification stage (2) with frequency drift; and a final amplification stage (6) with ...

RADIO SYSTEM ADAPTED TO OPERATE IN A MULTIPLE RADIO ALTIMETRY INSTALLATION The invention relates to a radio altimetry system that can be fixed to an aircraft and provide the distance of that aircraft from the surface, capable of operating in a multiple radio altimetry installation including at least two such radio ...

Method of detecting a fault within a redundant communication network wherein it comprises the following steps: o  a step of transmitting a first stream of monitoring frames from its main interface PA destined for its standby interface PB o  a step of transmitting a second stream of monitoring frames from its stan...

The architecture according to the invention comprises a passive radar system using opportunistic transmitters and a plurality of active radar systems which cooperate in the form of a coalition in order to monitor an area in space. The passive radar system and the active radar systems forming the architecture compris...

The present invention relates to a method for improving the acquisition of a data set transmitted repeatedly in a difficult environment. It is particularly appropriate to satellite radionavigation systems. The main characteristic of the invention is to provide "contextual" aid relating to the transmitted data by in...

The invention relates to a mobile-beam antenna mounting comprising a supporting base (6), at least one reflector (1) and a transmission and/or reception feed. The feed (3) is mounted in the mounting so as to be immobile relative to the supporting base (6) and the mounting also comprises a mobile support (7) bearing...

A device (501) for double frequency transposition, comprising means (500) for controlling the frequencies FOL1, FOL2 of a first and a second synthesizer (106, 107), which are adapted to carry out the following steps: o Initializing the frequency FOL2 at a first given value FOL2,A> o For a given pair of frequ...

The present invention relates to a device for measuring defects of an imaging instrument with a sensor that is accurate, simple to produce and implement and inexpensive. According to the invention, this device is characterized in that it comprises at least one second sensor, similar to the first, inclined relative t...

The invention relates to a process for manufacturing a printed circuit board comprising a first main circuit board (N) having a first structure, characterised in that it comprises a succession of steps appropriate for inserting one or more secondary printed circuit boards (RF) having a différent structure to that of...

The present invention relates to a method of measuring the direction of arrival 0 of radio signals in the HF band received by a crossed loop antenna. The method includes at least the following steps: • in a preparatory calibration phase (101), acquiring and recording the measurements made by the antenna of a calibr...

The present invention relates to a method for estimating the polarization ellipticity of an antenna response signal to an incident electromagnetic wave received on a crossed-loop antenna or an Adcock antenna array. The method comprises at least the following steps: measuring the phase offset ∆φ between the signals a...

The present invention relates to a method for transmission to a receiver of a geographic coordinate λ of a transmitter positioned in a spherical coordinate system λ, φ, at least a portion of one hemisphere of the Earth's sphere being divided into N sections each bounded by a minimum φ and a maximum φ, each section b...

The present invention relates to a method for protecting a two-way communications channel between at least a network N1 and a network N2 with a lower level of security than N1, and a device to implement the method. The method comprises at least the following steps: defining one or more types of data authorized to be...

The invention relates to a method of synchronizing optronic systems, of the type operating simultaneously on one and the same scene, each optronic system being intended to emit and/or receive light of a target of the scene and each optronic system comprising an internal precision clock (36) and a module suitable for...

The general field of the invention is that of devices for controlling luminance of lighting devices comprising light-emitting diodes. The control device (10) is driven by a cyclic input signal (SPWM) of determined period, each period comprising an activation time (TA) representative of a determined luminance level. ...

This payment system (10) comprises a payment terminal (12) and an electronic payment support (14) designed to interact with the payment terminal (12), the payment support (14) carrying an amount having a first residual value, and comprises: a first rewritable memory (34), and a second fuse memory (36), comprising a ...

ciThe invention relates to a method and device suitable for monitoring variations in the ground surface R and/or the presence of ground surface elements (2j) said method being implemented on a carrier moving at the speed V=(Vx Vy Vz) using a transmission/reception antenna (12) of a signal processing means (14) said ...

1122The invention relates to a tractable filter comprising at least two resonating circuits (14a 14b) arranged between two matching networks (4 5) characterized in that: one resonator is connected by a first of the ends thereof (14a 14b) to the ground M of the filter by plated through holes (16) and by a second end ...

The Invention relates to a system for pointing a laser beam, characterized in that it comprises: - at least one processing laser source (S1) for emitting a processing laser beam (FS1, FS2) toward a target (C1), said processing beam (FS1) being transmitted through a nonreflective zone (z1) of a first mirror (M1), sa...

The invention proposes a method for manufacturing an optical fibre sensor device (1) including a shell (10) defining a recess (3) and an optical fibre sensor (2) the optical fibre sensor including an optical fibre (12) and a device for holding the sensor (11) that is rigidly connected to the optical fibre the optica...

The invention relates to a method of determining the absolute direction of an object of a scene (1) with a predetermined desired performance. It comprises a learning phase and an on line operation phase the learning phase comprising the following steps:  acquisition by circular scanning by means of a first optronic ...

The method comprises the following steps: presentation of a mobile terminal (30) to an access control point (14) capture of an image (24) carried by the access control point (14) and representative of an encoded item of computer data by means of a camera (36) of the terminal (30) and decryption by the terminal (30) ...

The invention relates to a payload for augmentation satellite (600) comprising an input channel (201,202,503) suitable for receiving navigation signals transmitted by at least one navigation land earth station (NLES) in a first frequency band and a plurality of output channels (206,207,208,216,217,218), each sui...

A method for geolocating multiple emitters by space-time processing of the signals received on the antennas or sensors of the stations which makes it possible to coherently and adaptively process all the frequency channels of the sources without. The method consists in simultaneously exploiting all the signals recei...

The invention relates to a positioning system of an object provided with a receiver (R) which includes a set of pseudolites transmitting positioning signals and distributed in a constrained area and assistance means (S) capable of communicating with said receiver (R) and calculating the position of the object and a ...

The invention relates to a method for positioning a moving target on a radar image. It applies to radar systems comprising at least two reception paths and having electronic means for image processing for calculating a target dephasing value. According to the method previously detected moving targets are then positi...

Multiport antenna characterized in that it comprises at least two antenna motifs having a sectorial radiation pattern with a first polarization P1 (210, 220), an antenna motif (210, 220) comprising at least one load (212, 222) and at least one port (211, 221) positioned opposite the load in order to generate a secto...

A relay station RS used in a communication network that has a tree-structured architecture consisting of a number of hierarchical levels TLi, said communication network comprising a base station BS0 of the highest hierarchical level, one or more relay stations RS1 and one or more subscriber stations SSi, characteriz...

A system for a telecommunication platform (1) comprising applications delivering flows of packets, telecommunication resources (401, 402, 403) and a router (30), said system being adapted for determining, for a flow of packets delivered by an application, at least two operating modes, for selecting for the delivered...

The invention relates to a calculation device providing the means for estimating an indication of integrity (11) of a satellite navigation system, characterized in that it includes the means for estimating in real time, by measuring data calculated by the navigation system, an indication of integrity (11) of the sys...

The present invention relates to a method for configuring, in real time, an equipment item receiving and processing primary signals (201, 251, 252, 253) which are transmitted to it by satellite link, said method comprising the transmission of secondary signals (202, 260) with frequencies spread over a band at least ...

Method of identifying a protocol at the origin of a data flow. The method of identifying a protocol giving rise to a packet flow comprises the following steps:  a capture (102) of the flow of the protocol to be identified  statistical classification of the flow comprising an extraction of the classification paramete...

The invention relates to a positioner P for an antenna (12) intended to be placed in a given or restricted volume, comprising, in combination, at least the following elements: • a first axis Aa ensuring the movement of the antenna in azimuth, • a third axis Ay ensuring the movement of the antenna in elevation, sai...

The invention relates to a system for automatically launching and retrieving with no human intervention marine or submarine vehicles (15) from a carrier ship (10) which remains in movement in order to limit the amplitude of the pitch and roll movements to which the vehicle is subjected. The system comprises a tiltab...

An array antenna with reflector(s) (AR) comprises i) an array (RS) of at least two feeds (S1-S5), including a central feed (S1), arranged and positioned so as to transmit and/or receive beams (F1-F5) in chosen directions, ii) beam-forming means responsible for controlling the amplitude and phase of each of the feeds...

An orthomode transduction device (D), for an antenna, comprises i) a principal guide (GP) suitable for propagation along a principal axis of first and second modes having polarizations that are orthogonal to each other and provided with a first end coupled to a circular access (AC) and a second end, ii) a first auxi...

Method for determining the direction of arrival of an incident electromagnetic wave of bearing θ0, of elevation ho, of frequency F0 and of arbitrary polarization P0, comprising at least the following steps: o designing a single antenna array on the basis of a set of radiating elements whose vector responses t...

The switch (10) comprises a printed circuit (12), of generally plane shape, and comprising a first face bearing a first contact pad, a second face (12B), opposite the first, bearing a second contact pad (18), and a through-orifice (14) allowing access between the first face (12A) and the second face (12B). The sw...

A method and device for de-interleaving electromagnetic signals received on an antenna array, said antenna array being associated with a signal processing module comprising, in combination, at least the following steps: ® acquiring electromagnetic signals from a plurality of distinct sources, 10 ® determining a ...

The invention relates to the field of devices intended to generate a noise of high amplitude having specific spectral characteristics. It concerns a transmission device mainly comprising a transducer, means for synthesizing a digital noise sequence x'(n) and power sources. According to the invention, the device also...

1 - Method for determining the distance of an aircraft from an offset runway (15) during a landing by offset approach, the offset runway (15) being situated at a distance D from a main runway (11) equipped with at least one elevation beacon (12), characterized in that it comprises at least the following steps: • De...

The field of the invention is that of weapon aiming sights having a light intensifier. To make certain firing modes safe, a weapon may be provided with a camera allowing a soldier to take aim while remaining protected. The proposed invention allows this function to be fulfilled at night. For this purpose, a night ...

Device for controlling the parameters of a pulse of a high-power RF pulse transmitter comprising at least one amplifier characterized in that it comprises at least the following elements: a detector (4) of the transmitted pulse, a video amplifier (5), an analog processing device (6) suitable for providing info...

A device for controlling least two peak power levels for an amplifier operating in pulse mode, characterized in that it comprises at least the following elements: a premodulation stage comprising at least: • a first amplifier stage, comprising at least one amplifier (1) and one processing device (6) suitable fo...

The invention relates to a self-compensating dynamic joint (32), between two parts (11, 21) of a device, a fixed part and a part rotating about an axis of rotation on the fixed part, said joint providing the sea] for the device relative to the outside. The above comprises a seal piece (321) with a coefficient of exp...

An inflatable antenna structure, characterized in that it comprises a supporting mast (1) comprising hanging means (2, 5), one or more inflatable supports (3) of radiating elements (4), the support(s) (3) being attached to the mast (1), a system suitable for the inflation of the inflatable support (3). ...

The present invention relates to an electronic device module into which at least one printed circuit card is plugged. The electronic device module (1) comprises a first connector (4) mounted on one face (3) of the module (1), the first connector (4) being provided with electrical contacts each having an end (6)...

The present invention relates to the detection of intruders (human beings, vehicles or animals) in a protected zone and the departure of individuals from this zone. The invention relates to a device which comprises a plurality of individual standalone electromagnetic sensors placed on the perimeter of the guarded z...

A device (D) is devoted to supporting a first (Ml) and a second (M2) element of a piece of space equipment, such as a telescope for example. This device (D) comprises at least two deployable flexible arms (O1l to O32) each comprising a first end (EX1) and a second end (EX2) which ends are secured respectively t...

A device is dedicated to the damping of vibrations for an item of equipment (I) designed to be moved and comprising a structure (S1, S2) to which a first "element (E1) and a second fragile element (E2) having to be protected from the vibrations are coupled. This device comprises i) first piezoelectric ...

Method and system for routing data streams in a meshed system, in which use is made of multitopology routers each provided with an intelligent module and wherein at least one step is implemented which takes account of the flow objectives associated with a data stream, the intelligent module associated with each mult...

The reflector array comprises a plurality of individual radiating elements forming a reflecting surface with no abrupt transitions and is characterized in that: - each radiating element of the reflecting surface is selected from a set of predetermined consecutive radiating elements, called the pattern, - the first...

The invention proposes a solution to the problem of installing an antenna with long focal length on a satellite, and, as a non-limiting example, on satellites at a height that is less than the required focal length. It is based, on the one hand, on a reflector stored "inverted and head down", and, on the other hand,...

The present invention relates to a method for detecting and grading the state and the evolution of wake turbulence caused by an aircraft, on the basis of the radar signals reflected by this turbulence, these signals being analyzed through analysis cells of given dimension in terms of distance and bearing. This metho...

The present invention relates to a multiband transmit-receive coupler-separator with a very wide band of the OMT ("OrthoMode Transducer") type for microwave-frequency telecommunications antennae. This coupler comprises a port (P1) for propagating all of the frequencies, a body and a port (P2) for propagating high-fr...

Multiple-sensor tracking method, notably implemented in an air traffic control system, making it possible to reduce the latency time introduced by the tracking system, characterized in that the correlation (302) and association (303) functions work on the basis of membership of the detections (502) and of the tracks...

Device for optically detecting position and/or orientation of objects and associated detection methods The present invention relates to a device for optically detecting position and/or attitude of an object (5) moving in a given travel range (4), said device comprising electro-optical sensors positioned on sai...

The invention relates to a safe device for collecting coins. It comprises a support receiving a coin box comprising a hatch controlled by an internal mechanism. The coin box comprises: - a locking means making it possible to authorize its introduction and its extraction in the support; - a locking means mak...

The invention relates to a method of generating an optimized contribution signal comprising multiplexes. Each multiplex comprises global broadcasting services and its own combination of regional services. Each multiplex comprises stuffing packets and packets transporting signaling tables. The optimized contribution ...

ABSTRACT METHOD FOR THE MULTIPATH PASSIVE RADAR PROCESSING OF AN FM OPPORTUNITY SIGNAL The present invention relates to the field of passive radars, and more particularly the field of the processing of the signals utilized by such radars. The signal processing method received according to the invention performs ...

The invention relates to a reconfigurable reflecting array antenna comprising a subset of patterns capable of radiating signals emitted in a given direction and means of loading and placing said radiating arrays to place one of them in a chosen emitting position, characterized in that: the loading and placement mea...

The present invention addresses the resolving of the problems associated with the passive location of targets in TOA (Time of Arrival) or TDOA (Time Difference of Arrivals) mode. The method of passively locating a target in TOA or TDOA mode 5 implements a meshing (subdivision) into blocks of the space in which the ...

The compact excitation assembly for generating a circular polarization in an antenna comprises a diplexing orthomode transducer and a branched coupler and is characterized in that the orthomode transducer (21), called an OMT, is asymmetric and comprises a main waveguide (22) with square or circular cross section and...

The present invention pertains to methods for managing resources in radar time, that is to say methods making it possible to manage in an optimal manner the scheduling of the boresightings performed. The method according to the invention firstly consists in supplying a table containing candidate boresightings. Thes...

The present invention relates to a mechanical compensating device for a waveguide (1). More precisely, the present invention provides a technology for ensuring phase stability in a waveguide (1) subject to expansions and contractions owing to temperature changes. To do this, actuators, which may consist of pairs of...

DEVICE FOR READING AND COLLECTING MEDIA WHICH CAN BE READ WITHOUT CONTACT

The subject of the present invention is a method providing the means for recognizing the origin and/or the content of an RF signal without requiring substantial computation means, these recognition means being accessible only to authorized persons and being practically nonmodifiable and very difficult to detect by u...

The present invention relates to a flexible cap system optimized for thermally-compensated technology microwave resonators. More specifically, this invention proposes a multiple-membrane flexible wall system (10, 11) for thermally-compensated filters and OMUX. The use of a multi-membrane flexible wall (10, 11), in ...

The present invention relates to a device for resynchronizing a plurality of analog signals obtained by conversion, using double data rate (DDR) digital-analog converters, of a plurality of synchronized digital signals of frequency 2F at the output of a digital component. The device comprises at least two double da...

A method, dedicated to the fabrication of the panels having built-in heat pipe(s) and/or insert(s) (P) , consists in a) providing a bottom plate (SI) comprising, in selected places on either side of the heat pipe or insert accommodation zones, tabs (L) which are substantially flat and suitable for being straightened...

La presente invention concerne un procede d'amplification de signaux de radiocommunications par une chaTne (401) d'amplificateurs (412) associee a un controleur (413) de gain recevant une consigne (Vatt) d'amplification de valeur constante (Vfgm), pour effectuer une amplification a gain constant (FGM), ou de valeur ...

The invention relates to the general field of complex electronic and/or computerized system architectures for which the interchanges take the form of irregular data flows prompted by processing functions of variable duration in time. The object of the invention is an architecture designed for electronic systems hav...

A device (D) , dedicated to fixing a first piece of equipment (El) relative to a second piece of equipment (E2), comprises (i) a structure comprising a rigid central body (CC) prolonged by two approximately identical terminal bodies (CT1, CT2) and each comprising a neck defining a flexible intermediate part (PDl, PD...

The present invention relates to a protection circuit for MOS-technology field-effect transistors. The circuit comprises at least one MOSFET (102) protected by a module (101) for blocking said MOSFET, the module (101) being placed between the gate (102a) of the MOSFET and an electrical conductor (103), the module co...

The structural panel assembly structure comprises: • a rigid, substantially plane panel; • at least one one-piece attachment part, produced by moulding, glued to the panel, the attachment part comprising: o a first plane face comprising: • a recess that can receive a glue; and • rims intended to retain the gl...

The subject of the present invention is a frequency and phase modulation remote control receiver for a geostationary satellite which is lighter and less expensive than the customary receivers, while not degrading the passband of the telecommunication equipment for its payload, and it is characterized in that it comp...

A control device (D) for a spacecraft of a group of spacecraft intended to travel in a chosen formation comprises i) a set of at least three send/receive antennas (A1-A3) installed on at least three differently oriented faces of its spacecraft and adapted to send/receive radio-frequency signals, ii) first measuring ...

Very wideband open guide multidirectional antenna operating in a selected frequency range, characterized in that the antenna comprises at least the following elements: • A first metal plate (1) having a length L1 and a width 11 with a surface S1, • A second metal plate (2) having a length L2 and a width 12 with a...

The object of the invention is to propose a single and robust technical solution to the problem of the observability of equipment items intended to be integrated in satellites. To this end, the subject of the invention is an evanescent wireless network system for space equipment items (E1,E2,E3,E4,E5,E6) integrated...

The present invention relates to a switching circuit for controlling the passage of a radiofrequency signal between a first input-output (101) and a second input-output (105), said circuit comprising at least one diode (D2) between said inputs-outputs (101, 105), said diode (D2) being biased by a DC voltage source (...

The linearizer-channel amplifier device for a dual RF channel designed to be installed on a telecommunication satellite comprises two independent radiofrequency channels (RF1, RF2), each radiofrequency channel (RF1, RF2) corresponding to a radiofrequency-signal communication channel and comprising a channel-amplifie...

The invention relates to a device allowing the performance of the guidance of an interception delivery system towards a target detected by detection means to which the device is linked, means which designate to it the target to be intercepted. The guidance device comprises a laser imager and a dual deviation indicat...

Method for determining the angles of arrival or the direction of arrival of the multiple paths associated with a transmitter or source Ei in a system including N receiver antennascharacterized in that it includes at least the following steps: • effecting a symbol synchronization at the reference antenna (41) and...

The general field of the invention is that of optical position/orientation devices for a helmet and more particularly those whose helmet comprises neither emitters, nor receivers but solely passive optical components, detection of which is ensured by fixed opto-electronic means outside the helmet. The optical compon...

Method for estimating the position of a transmitter E on the basis of a moving sensor network installed on a carrier, said transmitter comprising a transmit antenna, comprising, in combination, at least the following steps: a) determining a set of direction vectors {a""I,.. ·,a""L} corresponding to the response ...

The invention relates to a method for locating transmitting sources by the use of the mutual coupling of a small-base antenna array and a slowio switching single-channel receiving system using the method. The invention relates to a single-channel radiogoniometry solution adapted to a slow switching of the receiv...

An antenna (2) for emitting/receiving electromagnetic waves, of the type comprising a reflective plane (12), an absorptive surface (10) and two orthogonal dipoles (18) each comprising two radiating elements (4). The radiating elements (4) are substantially planar and each have a general triangular shape. Fig. 1...

An antenna (2) for emitting/receiving electromagnetic waves of the type comprising two dipoles (16A, 16B) orthogonal to each other, each dipole (16A, 16B) comprising two radiating elements (4), a metal plate (8), and an absorptive structure (6). The radiation elements (4) are all substantially planar, both dipole...

The invention is a system for automatically and without human intervention launching and recovering marine or underwater vehicles from a carrier ship which remains under way in order to limit the amplitude of the pitching and rolling movements to which it is subjected. The system comprises an inclinable articu...

THE INVENTION RELATES TO A DEVICE FOR JAMMING THE TRANSMISSIONS OF AT LEAST ONE ENEMY TELECOMMUNICATIONS NETWORK SAID DEVICE COMPRISING A MEANS FOR RECEIVING AND STORING SIGNALS IN A RECEPTION BAND BR IN A RECEPTION TIME WINDOW OF A PREDETERMINED PERIOD OF TIME D. THE DEVICE FURTHER COMPRISES A MEANS (301) FOR ANALY...

The invention relates to a method for improving the tracking of a data transmission signal transmitted to a receiver of a satellite navigation system in addition to navigation signals transmitted by the satellites to a satellite positioning receiver comprising: a step of transmitting (10) to the receiver during a so...

The invention relates to visualization devices, particularly those for infantrymen, designed to improve the progress capacities and shooting capacities thereof during day missions and night missions. The aim of the invention is to propose a modular system comprising essentially a first modular system comprising esse...

The invention relates to a method for acquiring images of a scene from a moving carrier (2) equipped with a sensor which comprises a step of acquiring images (1) of the scene during the movement of the carrier and a step of servocontrolling the angular direction of the line of sight of the sensor. The acquisition is...

System for controlling an optical surface to be measured The invention relates to a system (10) for controlling an optical surface to be measured relatively to an optical reference surface, the control system (10) comprising a first optical element (36) provided with a first optical axis and able to introduce a f...

Piloting assistance system for an aeronef (1), characterized in that it comprises measuring means which are capable of taking distance measurements from the aeronef (1) to the ground, and speed measurements from the aeronef (1) to the ground, on at least three independent 1o transmission channels and on at least...

The system includes an antenna composed of transmission sub-arrays (A1, … AQ) illuminating one and the same zone of the space and at least one reception sub-array (AR), each sub-array having a given position in said array, each transmission sub-array transmitting a signal having a specific characteristic, the set of...

The invention concerns an architecture defining functional and technical 5 perimeters to be complied with between two subassemblies termed "baseband" and "radio frequency", and to a generic physical interconnection pattern between baseband and radio frequency, which, under nominal operation. does not require physi...

A receiving assembly (2) for receiving a seagoing vessel (1) which can be suspended on a hinged arm (4) of a handling structure (3) provided with a lifting cable (8) intended to lift a seagoing vessel (1) and to move said vessel in a vertical direction (z) so as to deploy and/or recover said vessel (1) in the sea fr...

The invention relates to a method for and a system of calculating the low probability events for the evaluation of the precision performance of a satellite navigation system. The invention makes it possible to certify the precision performance of a satellite navigation system for high levels of requirement by model...

The invention relates to a device for transmitting energy, comprising: -a wall (2) separating two media; and -at least one conductive element (3) passing through the wall (2), the conductive element (3) comprising an energetically conductive material extending in a longitudinal direction (dLong). The conductive e...

The present invention relates to an amplifying device for satellite for amplifying a plurality of n transmission channels to an output corresponding to a beam, the device comprising: - means for combining frequency bands comprising n inputs for receiving the n transmission channels and q outputs for providing respec...

The invention relates to a method for aiding aircraft landing using a GPS and an MLS within the context of a computed axial approach. According to the invention, the method uses coordinates of the azimuth antenna and/or of the elevation antenna as reference point for the computation of a position of the aircraft in ...

The dual-polarization planar radiating element is characterized in that it comprises an external metal grid (38), at least one metal patch (15) concentric with the external metal grid (38) and a cavity (41) separating the metal grid (38) and the metal patch (15), the grid and the patch having a polygonal shape delim...

The present invention relates to a method for keeping the routing tables of the nodes of an unstable dissemination network up to date, said nodes joining or leaving said network unpredictably. A node periodically sends a synchronization message to all other remote nodes, the period for sending a synchronization mes...

The invention relates to an antenna module comprising at least a first series of unitary radiating elements (ER1i), from a second series of unitary radiating elements (ER2i) facing the unitary radiating elements of the first series, so as to broaden the frequency band of said antenna module, characterized in that it...

The invention relates to a method for processing (50) a signal arising from coherent lidar comprising a coherent source (L) that is periodically frequency-modulated; - a beat signal (Sb) being generated by photodetector (D) on the basis of the interference between an optical signal that is referred to as the local o...

The invention relates to an optical head of an item of monitoring equipment to be installed on board a vehicle. The optical head comprises a matrix detector (5) that is sensitive in the IR2 spectral band, with a bandwidth less than 1µ, centered on a predetermined value X0 and capable of operating with a frequency gr...

The embodiments of the invention provide a method for determining a spatial coverage of a multi-sensor detection system comprising a plurality of sensors, the plurality of sensors being supported by supporting structures situated in a given geographical area, at least some of the supporting structures being movable,...

The invention relates to a method and system for determining the number of incident sources in an array that comprises C sensors receiving N observations, said method comprising at least the following steps: calculating the matrix B and the eigenvalues {λ1,…, λN} thereof obtained from a signal received on C sensors;...

The invention relates to a method for designating a target in an area which is intended for a weapon having terminal guidance via imaging by means of an airborne optronic system including an imager associated with geopositioning means and a processing unit. Said method includes the steps of: acquiring an image of th...

The invention relates to a method and a system for locating a transmitter device (20i) on the basis of N stations (IOj), by using at least one date-stamping benchmark common to the N stations comprising at least the following steps: triggering one or more synchronized acquisitions on N stations for a given frequenc...

IDThe present invention relates to an identification document (12) comprising a physical medium having at least one alphabetical inscription for identifying the document holder and at least one two dimensional barcode (20) for identifying the document holder. The document comprises at least two two dimensional barc...

The invention relates to an object (20) that can be towed in a fluid by a cable (12) according to a substantially horizontal transport axis (X); the object (20) including a body (21) suspended by gravity from the cable (12) by an attachment arm (22a 22b) and including: an outer hydrodynamic surface (24) which is sym...

Monocular or binocular viewing system including a first display (1) and a first optical assembly including a first optical relay (2) and a partially transparent first optical mixer (3) said first optical relay (2) including a first forehead lens said first optical assembly forming a second image at infinity of a fir...

A fairing element (230) intended for fairing an elongate object (1) comprising a channel (16) intended to receive the elongate object (1) and being profiled in such a way as to reduce the hydrodynamic drag of the elongate object (1) when the elongate object is at least partially submerged said fairing element compri...

A towing assembly comprising a towing and handling device intended for towing an elongate faired element comprising a winch (5) for winding and unwinding the elongate faired element (1) through a guide device (4) for guiding the elongate element (1) the guide device comprising a first groove (24) of which the bottom...

A method for handling a faired cable (1) using a fairing (2) said cable being towed by a vessel (100) on board which is installed a winch (5) for winding up and unwinding the faired cable (1) through a guide device (4) for guiding the faired cable the method comprising:  a first step (10) of monitoring the cable (1)...

ABSTRACT SPARGING LUBRICATION MECHANISM COMPRISING A DRIVE GEAR The sparging-lubricated mechanism comprises a housing (4) and a drive or transmission gearing (6) disposed within the housing (4), the gearing (6) possessing two toothed gear wheels (12, 14) provided with respective toothings (16, 18) intermeshing wi...

The invention relates to an antenna having a directable hyperfrequency beam which comprises: a first dielectric component having subwavelength microstructures formed on a surface of a dielectric substrate; a second diffractive dielectric component (C2) having subwavelength microstructures formed on a surface of a di...

The invention relates to a method for processing a signal formed of a sequence of pulses comprising at least one repetitive pattern formed of at least one pulse said pattern being repeated in the signal with a pattern repetition period. This method comprises the estimation (20) of the pattern repetition period of sa...

The invention relates to a Pockels cell (100) that comprises two electro-optic crystals (10a, 10b) similarly orientated in thermal compensation on a horizontal metal base (12) common to the two crystals, and a carrier structure (13). A thermally conductive element is included between the base (12) and the carrier st...

The invention relates to a method for determining an angle of arrival of a received radioelectric signal implemented by a receiving antenna system including either one rotating antenna having at least two receiving channels, or two rotating antennas with a same speed each having a receiving channel, and having di...

A training and/or assistance platform (1) for air traffic management, including: - an air traffic management electronic system (2), adapted for obtaining input data representative of air traffic, to deliver, to an air traffic controller, information established as a function of said obtained input data, and to re...

The invention relates to an elementary antenna comprising a planar radiating device (10) comprising a substantially flat radiating element (11) having a centre (C) the plane containing the radiating element (11) being defined by a first straight line (D1) passing through the centre (C) and a second straight line (D2...

The invention relates to an air traffic management electronic system (2), including the steps of: - reception by said system (2) of input data representative of the state of air traffic; - establishment by said system of information relative to the air traffic as a function of said input data and delivery of sai...

The invention relates to a method for testing the electromagnetic compatibility of a radar detector (4) with at least one onboard pulse signal transmitter, wherein said radar detector (4) and each onboard transmitter are part of the same platform, by means of eliminating the onboard component in the signals received...

The invention relates to a method for testing the electromagnetic compatibility of a radar detector (4) with at least one onboard pulse signal transmitter (2), wherein said radar detector (4) and each onboard transmitter (2) are part of the same platform, by means of eliminating the onboard component in the signals ...

The invention relates to a method for testing the electromagnetic compatibility of a radar detector (4) with at least one onboard pulse signal transmitter, wherein said radar detector (4) and each onboard transmitter are part of the same platform, by means of eliminating the external echo component in the signals re...

The invention relates to a fairlead designed to be fitted to a towing device that can be installed on the deck of a ship and comprising a winch a cable that moves in the fairlead (20) under the action of the winch the fairlead (20) comprising: · an open-cross-section channel (24) extending along a main direction (27...

The invention relates to a passive IR imaging system comprising: - a matrix detector (1) in a cryostat with a cold diaphragm (3) - an image formation device with focal length continuously variable from FGC to FPC having within the range of focal lengths a constant digital aperture and an aperture diaphragm at the co...

The present invention relates to the field of the interception of electromagnetic signals. It more particularly relates to a method for manufacturing a two-dimensional radio-direction-finding antenna array comprising a step of designing said antenna array depending on preset constraints, said designing step comprisi...

The vehicle delimits an interior space (16) from an exterior space (18). The sighting device includes: - a support (26) defining an interior volume (30); - a optronic head able to rotate about an axis (X2); - an optical path (28) comprising: - a collecting optical unit (58) for collecting a portion of the surroundin...

The invention relates to an elementary antenna comprising a planar radiating device comprising a substantially flat radiating element and an emission and/or reception circuit comprising at least one first type of amplification chain and at least one second type of amplification chain, each first type of amplificatio...

Upon each new detection, called pivot detection, by a radar system, the method includes the steps consisting of: grouping together, with the pivot detection, grouped detections, defined as detections that belong to a sweep preceding the sweep of the pivot detection and that have a non-nil probability according to a ...

Measuring device which is intended to be immersed in water, comprising an arm assembly and a reference axis, the measuring device being suitable for being in a deployed configuration, the measuring device comprising an assembly of measuring blocks carried by arms of the arm assembly and each comprising an acoustic w...

Method for optimizing the elevational pointing of an antenna of an airborne radar system (1) at an altitude h comprising an antenna and processing and calculation means, the method comprising: a. selecting an area of interest (2) b. calculating atmospheric losses Lref at a reference altitude href at the reference...

The invention relates to an enhanced-performance electronic device (6) comprising at least one computer processor (14) and at least one memory unit (16). This device stores a map (20) of operating levels according to at least one parameter that is representative of a condition of use of said device, comprising a nom...

The invention relates to a method for processing coherent MIMO radar processing DDMA waveforms and comprising NTX transmitters and NRX receivers, comprising the steps of - a) generating waveforms on at most NTX transmitters, the waveforms, modulo the pulse repetition frequency Fr, being identical from one trans...

The invention relates to a device for radioelectric stimulation of an antenna, comprising at least one emitting subunit (52) formed by an array (55) of radiating elements (551) and an array (54) of photoelectric receivers (541); as well as a generator (51) which synthesises a set of electrical signals (511) intended...

Method for filtering with reduced latency and associated devices The invention relates to a method for filtering a numerical input signal sampled at a sampling frequency in order to obtain a filtered signal, the method including at least one step for: - obtaining a first (respectively second) output signal by car...

Method for simplifying a filter and associated devices The invention relates to a method for simplifying a sampled signal digital filter, the method including at least one step for : - in order to obtain a first intermediate filter, gathering channels including discrete nonstationary operations relating to the s...

The invention relates to a method and system for calibrating time shift between pathways (?1,..., VN) of a system for multipathway reception (2) of radioelectric signals, the system (2) comprising a set of radioelectric signals reception pathways (?1,..., VN), each comprising a reception chain (61 v., 6N) deliverin...

Transfer device for limiting torsion in a line (105) between an end of the line that is fixed with respect to a fixed part (102) and an end of the line that is fixed with respect to a rotating part (103) that is able to rotate with respect to the fixed part (102) about an axis of rotation (x), the transfer device fo...

An acoustic antenna (ANT) intended to equip a sonar, the antenna being centred around a first longitudinal axis (Al) and comprising at least a first assembly of at least two transducers (Tl) and a second assembly of at least two transducers (T2) stacked along the longitudinal axis, each transducer having at least a ...

Bidirectional hyperfrequency coupler comprising two parallel (VP, VC) double-rib (NVP, NVC) waveguides having two respective faces arranged facing one another and mechanically connected by a metal layer (CM), and comprising antenna assemblies (EA) connecting the respective interiors of solid portions outside the rib...

The present invention relates to a faired towing cable used on a ship to tow a sea-launched submersible body. The cable (14) comprises a core (24) and a fairing (26, 28) mounted on the core (24). The fairing (26, 28) is profiled in such a way as to reduce the hydrodynamic drag of the cable (14). The fairing comprise...

The present invention relates to a device for detecting optical pulses, the device comprising a sensor (20) having a plurality of pixels, each pixel comprising: - a receiver configured to receive optical pulses and to generate an electrical signal; - an event detection unit comprising a frequency filter having an ad...

The present invention relates to a device for classifying (14) a light source (11), comprising: - a sensor (20) suitable for receiving a light flux emitted by a light source (11), the sensor (20) comprising a plurality of pixels grouped into sets, each set comprising a first pixel and a second pixel adjacent to the ...

The invention relates to a system and a method for automatically harmonising the position and/or orientation between an apparatus (6, 10) on board a mobile carrier (4) and a reference frame of the mobile carrier, the mobile carrier (4) being provided with an inertial unit (8) suitable for providing measurements in t...

The invention relates to a device for recovering a vessel (N) at sea from a surface station, the recovery device comprising: - a cradle (B) with negative buoyancy for supporting the vessel (N), - a lifting device (LEV) comprising an upper frame (CS) and a hanger assembly (11, 12, 13, 14, 15, 16) connecting the cradl...

The invention relates to a device for recovering a vessel (N) at sea from a surface station (H), the recovery device comprising: - a cradle (B) for supporting the vessel (N), - a lifting device (LEV) comprising an upper frame (CS) and a hanger assembly (11, 12, 13, 14, 15, 16) connecting the cradle (B) to the upper ...

The present invention relates to an open world communication device (16) with an aircraft avionics system (12) comprising an application component (22-1, …, 22-N). The device (16) further comprises an interfacing component (24) comprising a communication module (31) able to intercept each request sent by the applica...

The present invention relates to a method for assisting in the detection of elements in an environment, the method comprising the steps of: - simultaneously acquiring a first image, in a first spectral band, and a second image in a second spectral band, of the same portion of the environment, - detecting and classif...

Imaging radar system (100, 500) comprising an antenna system (ANT) comprising a plurality of sectors (TX, RX1, RX2, RX3, RX4) each composed of a plurality of activatable radiating elements, the radar system comprising at least one transmission channel and at least one reception channel capable of each controlling...

A method and system for locating a target (10), of azimuth Atargetestimated and of elevation angle Stargetestimated, in space by a carrier using at least one first antenna array with electronic scanning ARRAY_H and at least one second antenna array with electronic scanning ARRAY_B, said target emitting a signal in ...

In the field of wideband directional antennas employing linearpolarization, and in particular in the context of amplitude goniometry systems,polarization purity defects lead to deformation of the radiation diagrams thatincreases with the elevation, inducing degraded detection system locatio...

The invention concerns an optical system for pointing a laser at a target (100) through the atmosphere with four optical paths:  a passive imaging path with an auxiliary camera (1) linked to a coarse pointing control device (2)  an illumination path with a pulsed illumination source (5) and time synchronisation mean...

The general field of the invention is that of optical systems comprising a zoom lens (Z) and an optical detection unit with depth estimation, said optical detection unit with depth estimation comprising a microlens array (MML) and a matrix detector (DM, the microlens array being arranged in such a way that the image...

The invention relates to a method of estimating bearing of an optronic system in a geographical reference frame the optronic system being situated at a first position and referred to as first optronic system. It comprises the following steps: - defining a collaborative configuration - by means of the first optronic ...

- A first step (32) selects a small number of candidate modes arising from a database (34) after the interception of an unknown radar mode characterized by parameters; - a second step (36) carries out a scoring operation: o by assigning a similarity index to each of said parameters for each candidate mode the index ...

The present invention relates to a method for correcting defects introduced by a digitalization system (20), the method comprising at least the following steps: - obtaining the output signal of the digitalization system (20), - calculating coefficients of a theoretical model (]) by minimizing the error between th...

The invention relates to a driving device comprising: a frame (19), a screw-nut system comprising a threaded stem (18) and a first nut (20) helically linked with the threaded stem (18), the threaded stem (18) being connected to the frame (19) by a pivot link (218) allowing the threaded stem (18) to rotate relative t...

The invention relates to an optronic system for a platform the optronic system (14) comprising: a support (26) that can be rotated about a first axis the support (26) defining an inner space; an optronic head (24) for observing part of the surroundings of the platform the optronic head (24) being mounted such that i...

Radar system (300) configured to determine radar-ground distance measurements. The radar system (300) comprises transmission and reception means (301) configured to transmit two radiofrequency signals towards the ground and to receive the signals obtained by the reflection of the two transmitted signals by the groun...

A proximity radar method for a rotary-wing aircraft comprises a sequence of phases T(k) of steps. In a first phase T(1), the electronic computer of the radar system computes unambiguous synthetic patterns on the basis of a first activated interferometric pattern M(1) of N unitary radiating groups. In the following...

The invention relates to a method and a device for recording digital data representative of an operating variable of an observed system, the digital data representative of said variable being obtained in the form of samples, the method comprising a data recording over time. The method [sic] receiving (28) successive...

The present invention relates to a method for determining parasitization situations due to spectral aliasing in a wideband digital receiver, the method being implemented by means of an interferometer with P antennas, P being an integer greater than or equal to 1, each antenna being followed by an analog reception ch...

The invention relates to a synchronization device (26i) designed to be inserted into a reception channel of a multichannel radio signal reception system between an interfacing module (10i) and a digital signal processing module (12i), the interfacing module being designed to receive digitized signal samples from an ...

The invention relates to a method for determining wave height by means of a radar carried by an aircraft, said method implementing the following steps: a first step (21) of pointing the antenna of the radar; a second step (22) of determining the clutter acquisition plan according to the altitude of the aircraft; a t...

Assembly comprising: - at least a first set (2) of a plurality of spacecraft (20, 21, 22) which are intended to be attached to a launcher (23) in a launch phase, characterised in that the spacecraft are arranged around a central axis (Z) in the same transverse plane perpendicular to said central axis, said spacecraf...

The invention relates to an AC-DC chopping converter for supplying a direct output voltage Vout between a first output terminal (B1) and a second output terminal (B2), said converter comprising at least one conversion chain for converting an alternating input voltage applied between an input terminal (E) and a neutr...

Interpolator for interpolating, by a ratio n, the sampling frequency of a signal, called the input signal, the interpolator being characterised in that it comprises: - a first interpolation stage (101) comprising an over-sampler configured to over-sample the input signal by a ratio n1, with n1 being a sub-multiple o...

The invention relates to a method for transmitting/receiving radar and a device for implementing said method, the method alternately implementing two operating modes, a short-range mode using short pulses and a long-range mode using modulated long pulses, the method consisting, for each mode, in: - generating two sy...

The present invention relates to a deployment device (20) intended to be positioned on a bearing structure (80), characterized in that it comprises: · a first instrument (11) and a second instrument (12), · a deployment mechanism comprising: o a main arm (14) connected to a face (81) of the bearing structure (80) at...

The invention relates to the field of air navigation. More specifically, the invention relates to a method implemented by a computer, comprising uploading an initial active flight plan of an aircraft comprising a first procedure of approaching a runway up to a missed approach point, terminating between the missed ap...

The present invention relates to a method for determining, using an optronic system (18), at least one position and at least one orientation in a scene (10), the scene (10) comprising reference elements (12) of known geographical coordinates, the method comprising an initialization phase that comprises the following...

The invention relates to a method for orchestrating software applications, of distributed telecommunication platforms (20), connected to links (40, 41) of a wireless telecommunication network comprising processing resources (6), the method comprising the selection of at least one platform for executing the software ...

The invention relates to a method for transmitting type object detection data, the method comprising, after a detection process has been carried out on a captured image, the following steps: if, for the given image, a detection probability of between S and S' has been determined, wherein S' is predetermined to be st...

Disclosed is a rear optical device (14A, 14B) intended to form an image depending on an optical flux captured by a front optical device (12), the rear optical device (14A, 14B) comprising - a housing (22A, 22B) comprising a sensor (26A, 26B) defining an image format, and - a coupling unit (24A, 24B) intended to remo...

The present invention relates to a radar system (10) including a radar (12) and a computer (14), characterized in that the radar system (10) is provided with an electronic warfare function serving to associate a radar spectrum (S) from an observation of a target object with an identifier (Id) of type of a radio fr...

The invention relates to a medical imaging system comprising: - a support (2) having a frame (20); and - at least two wheels (21) assembled directly or indirectly to the frame (20) so as to allow said support (2) to be moved; - a medical imaging device; - a control device (4) configured to control the medical i...

The present invention relates to an electronic module (10) comprising: 5 - a printed circuit (12) having an upper face (20) and a lower face (22) and comprising a reference conductor, - electrical components (14A, 14B) mounted on the upper face (20) of the printed circuit (12), - a coating layer (16) coating the ...