Patent application number | Description | Published |
20090055038 | AUTONOMOUS AND AUTOMATIC LANDING SYSTEM FOR DRONES - The invention relates to an automatic aircraft landing guidance system having an electromagnetic detecting and locating device, positioned on the ground and a first multifunction transmitting/receiving radiofrequency beacon, on board each guided aircraft and transmitting in particular a continuous wave. The detecting and locating device uses the continuous wave transmitted by the beacon to perform a passive locating intended to improve the accuracy of the measurement of the angular position of the aircraft. It also comprises means for generating and periodically transmitting to the aircraft, via the beacon, information enabling said aircraft to rejoin an optimum landing path from its position. The invention applies more particularly to the guidance of autonomous and automatic aircraft such as drones in the approach and landing phase. | 02-26-2009 |
20090243911 | METHOD AND DEVICE FOR POSITIONING AIRCRAFT, SUCH AS FOR AUTOMATIC GUIDING DURING THE LANDING PHASE - The present invention relates to a method and a device for locating aircraft. A radar ( | 10-01-2009 |
20090284406 | METHOD USING RADAR TO DETECT A KNOWN TARGET LIKELY TO BE POSITIONED AT APPROXIMATELY A GIVEN HEIGHT, NEAR OTHER TARGETS POSITIONED AT APPROXIMATELY THE SAME HEIGHT - Using a radar to detect a known target likely to be positioned at approximately a predetermined height close to other targets, these other targets also being positioned at approximately the predetermined height. A first phase of detecting the known target is carried out by performing an azimuth scan. When the known target has been detected at a certain distance Di at a certain azimuth angle θaz, a second detection phase is carried out at said azimuth angle θaz and at an elevation angle θEL corresponding to that of an object situated at said distance Di at the predetermined height. The target is said to be detected if it is detected at the elevation angle θEL at a distance D approximately equal to the distance Di. | 11-19-2009 |
20090315755 | METHOD FOR DETERMINING THE POSITION, NOTABLY IN TERMS OF ELEVATION, OF A TARGET FLYING AT VERY LOW ALTITUDE - The present invention relates to a method for determining the position notably the elevation of a target flying at very low altitude. An electromagnetic detection system extracts the measurement of the elevation on the basis of the amplitude of the interference signal produced by a signal emitted directly by the target and by a signal emitted by the target towards the ground then reflected by the ground towards the radar. Embodiments of the invention can notably be used within the framework of the guidance of drones in the final landing phase. | 12-24-2009 |
20100085237 | DEVICE AND METHOD FOR LOCATING A MOBILE APPROACHING A SURFACE REFLECTING ELECTROMAGNETIC WAVES - Device and a method for locating a mobile object approaching a surface reflecting electromagnetic waves. The location device includes an emission antenna and a reception antenna. The emission antenna has one or more emission positions emitting a detection signal toward the mobile object. The reception antenna has at least one column of one or more reception positions, receiving a signal transmitted by the mobile object. An emission of the detection signal is activated on each emission position. An emission position that produces a detection by the reception antenna, of the signal of maximum energy transmitted by the mobile object, is selected to track the mobile object. One or more signals of maximum energy, received by one or more reception positions, are used to angularly locate the mobile object. The invention can be used to determine the position of an aircraft in the final landing phase for a guidance device. | 04-08-2010 |
20110118910 | Decision Aid Device for Assisting the Landing of an Aircraft on the Deck of a Ship - A device for aiding the deck-landing of an aircraft, the aircraft being controlled remotely from a mobile station, such as a ship, includes means for receiving data from the aircraft, notably attitudes of the aircraft, the aircraft hovering ready to land on deck, the deck-landing decision having to be taken under certain conditions that must all be met, the device including a computer making it possible to deliver temporal indicators indicating that all the conditions are met. The device includes a temporal gauge including a temporal graduation indicating mobile graphical zones representing the periods during which all the conditions are met for authorizing a deck-landing. | 05-19-2011 |
20110130898 | Method and System for Assisting in the Landing or the Decking of a Light Aircraft - The present invention relates to a method and a system for assisting in the landing or the decking of a light aircraft, the method being implemented by a system comprising a device on the ground for locating the aircraft, the aircraft having an onboard signal sender, the method comprising at least the following steps: the locating device on the ground uses signals sent by the sender to determine the position and/or movement of the aircraft; said device transmits the previously determined aircraft position and/or movement data to the aircraft; display means show at least some of said data made accessible to the pilot of the aircraft. The invention applies in particular to the field of civil light aeronautics, notably for facilitating the landing of pleasure aeroplanes, small transport aeroplanes and helicopters. | 06-02-2011 |
20110160941 | Broadband Multifunction Airborne Radar Device with a Wide Angular Coverage for Detection and Tracking, Notably for a Sense-and-Avoid Function - A multifunction airborne radar device includes a plurality of transmit antenna modules and/or receive antenna modules that are fixed relative to the aircraft, placed substantially over the surface of the aircraft so as to form transmit and receive beams, enabling targets to be detected for implementing a sense-and-avoid function. The airborne radar device may also comprise processing means for tracking the detected targets and for generating information sent to an air traffic control centre and/or to a control device on board the aircraft. The processing device may also receive data relating to the aircraft, enabling the antenna beams to be adjusted and the tracking calculations to be refined. | 06-30-2011 |
20110193738 | Radar for Aerial Target Detection Fitted to an Aircraft Notably for the Avoidance of Obstacles in Flight - A radar being carried by an aircraft includes means for transmitting an RF wave towards a target, said wave having a double form, a first waveform being composed of at least two sinusoids of different frequencies transmitted simultaneously, the radar comprising reception circuits receiving the signals reflected by the target and analysis means performing the detection of the target on the basis of the signals received. The second waveform is of the pulse type. The transmitted waveform is dependent on the relative speed of the target with respect to the carrier and on the absolute speed of the carrier. | 08-11-2011 |
20120081247 | RADAR WITH WIDE ANGULAR COVERAGE, NOTABLY FOR THE OBSTACLE AVOIDANCE FUNCTION ON BOARD AUTO-PILOTED AIRCRAFT - A radar includes a transmitting antenna and receiving antenna formed by an array of radiant elements. Antenna beams are calculated in P directions by a BFC function. Detections of a target by secondary lobes of the beams are processed by an algorithm comparing levels received in a distance-speed resolution cell, a single detection at most not being possible for each distance-speed resolution cell. Processing means use the assumption that there may probably be more than one echo with a signal-to-noise ratio that is sufficient to be detectable, for a given resolution cell of the radar, either in speed mode or in distance mode, or, alternatively, a distance-speed depending on the processing implemented; and, if there is more than one echo detectable for each resolution cell out of the plurality of beams formed by BFC, only the echo and BFC that obtain maximum power or maximum signal-to-noise ratio are/is considered valid. | 04-05-2012 |
20120212373 | System for Measuring the Radial Speed of a Moving Body - A system for measuring the radial speed of a moving body in a line of sight determined for a referential position includes an emitter assembly for emitting a signal and a referential receiver assembly dedicated to reception of said signal. The emitter assembly is disposed on a first of the elements of a group formed by the moving body and the referential position. The receiver assembly is disposed on a second of the elements of the group. The emitter assembly is able to emit a signal on at least two emission frequencies, said emission frequencies being separated by a chosen emission frequency gap. The system includes a means for analyzing the signal received by the receiver assembly, to measure the reception frequency gap separating the signal reception frequencies to calculate the radial speed of the moving body according to a function of the reception frequency gap and emission frequency gap. | 08-23-2012 |
20130315287 | DEVICE FOR BROADBAND RECEPTION BY AUTOTRANSPOSITION AND APPLICATION TO THE DETECTION AND CHARACTERIZATION OF RADIOELECTRIC EMISSIONS - Use of an antennal base formed of two antennas which pick up the emissions present and produce two radioelectric signals S1 and S2. These two signals are used to produce at least one intermediate-frequency signal Fl by demodulation of one of the two signals by the other (autotransposition). The demodulation is carried out by firstly transposing one of the signals, S1 for example, around a given frequency F1, the signal S2 being preserved around its initial central frequency F | 11-28-2013 |
20140028486 | LOCATION SYSTEM FOR A FLYING CRAFT - A location and guidance system including a flying craft and a reception device. The flying craft includes a plurality of antennas distributed around its fuselage and emitting rearwards with rectilinear polarization, the emitted signals being specific to each antenna, the positions and the dimensions of the antennas being configured such that the body of the flying craft avoids by masking for at least one antenna the reflections of the signal emitted by this antenna off the ground or off lateral obstacles whatever the position of the flying craft. The reception device is placed substantially on a trajectory axis of the flying craft and configured to be oriented to sight the rear thereof and includes at least two single-pulse antennas operating in orthogonal planes determines a position of the flying craft by analysing the emitted signals received by the antennas of the reception device. | 01-30-2014 |
20140091964 | METHOD OF RADAR SURVEILLANCE AND OF RADAR SIGNAL ACQUISITION - A radar includes an antennal structure, with means for transmitting an impulse signal in a band centered on F1 according to a repetition period centered on a recurrence period Tr1 and pulse width T1, with means for receiving signals by the antenna in frequency band ΔF, with a unit for processing the signals received on a set of N distance bins. The signals received are transmitted by another radar in a frequency band centered on F2 where F2−F1≦ΔF, according to a repetition period centered on a period Tr2 and pulse width T2. The signals transmitted by the two radars are asynchronous. The method comprises: slaving frequency F1 to frequency F2, by measuring the power received integrated over the N distance bins and over several recurrences, determination of period Tr2 and T2 and slaving the period centered on Tr1 to a period centered on Tr2 with Tr1=k*Tr2. | 04-03-2014 |
Patent application number | Description | Published |
20100204804 | FOREARM ROTATION MECHANISM AND ORTHESIS WHICH INCLUDES SUCH A MECHANISM - Rotation mechanism for a forearm which includes a moving stay ( | 08-12-2010 |
20110098619 | SHOULDER MECHANISM FOR AN ORTHOSIS - The invention relates to a shoulder mechanism for an orthosis, providing a ball type joint between a support and an orthosis upper arm, comprising a first intermediate element mounted to pivot on the support about a first pivot axis, a second intermediate element mounted to pivot on the first intermediate element about a second pivot axis, the upper arm being mounted to pivot on the second intermediate element about a third pivot axis. According to the invention, the first pivot axis extends in a longitudinal horizontal direction, the first intermediate element including a circular rail on which the second intermediate element slides and that presents a geometrical axis defining the second pivot axis that extends vertically when the upper arm is at rest, the circular rail extending to go around the shoulder on the outside. | 04-28-2011 |
20120031164 | METHOD FOR FRICTION COMPENSATION IN A DEVICE WITH FORCE FEEDBACK PROVIDED WITH CABLE TRANSMISSION - A method of compensating friction in a force-feedback device comprising a control member manipulated by a user and coupled to a tensioned cable that is actuated by a motor and gearbox unit. The method includes the steps of (1) detecting a variation in the sag of the cable caused by a manipulation of the control member, and (2) in response to such a detection, controlling the unit so that it develops a force (Fa) that compensates, at least in part, for the internal friction (Rsa) of the unit that opposes movement of the control member manipulated by the user. | 02-09-2012 |
20120172769 | SHOULDER MECHANISM FOR ORTHESIS - The invention relates to a shoulder mechanism for an orthosis comprising in succession:
| 07-05-2012 |
20130041641 | METHOD FOR IDENTIFYING FRICTION IN A HINGE OF A ROBOT ARM OR MANIPULATOR ARM, AND USE THEREOF IN A TORQUE COMPENSATION METHOD - An identification method for identifying the behavior of a hinge of a robot arm or of a manipulator arm, the method including the steps of selecting a behavior model linking the input torque and the output torque of the hinge depending on operating parameters, and of operating the hinge in such a manner as to measure several (input torque/output torque) operating points, and of performing a regression in order to identify the parameters of the model and thus to determine at least one of the direct or indirect characteristics of the hinge. The behavior model retained includes dry friction having a first component that does not depend on the output torque, and a second component that does depend on the output torque of the hinge. | 02-14-2013 |
20140245846 | ASYMMETRICAL ANTI-ROTATION DEVICE AND SCREW JACK COMPRISING SUCH A DEVICE - The invention relates to an anti-rotation device for preventing the rotation of a driven element ( | 09-04-2014 |
20140257160 | LOWER EXOSKELETON - The invention relates to a lower exoskeleton intended to be worn by a user and comprising: a pelvic element ( | 09-11-2014 |
Patent application number | Description | Published |
20100062227 | SUBSTRATE WHICH IS PROTECTED AGAINST ORGANIC POLLUTION - The invention relates to a substrate ( | 03-11-2010 |
20100315641 | Polarimeter - A kit having a supporting device for maintaining a transparent article having a longitudinal axis A, a proximal end and a distal end. The supporting device including a proximal holder including a port intended to receive the proximal end of the article, and a distal holder including a receiving part intended to receive the distal end of the article, the port and the receiving part being aligned on the same longitudinal axis B. The supporting device further having a compressor for putting the article under longitudinal compression directed towards a center of the article, when the article is mounted on the supporting device with its longitudinal axis A aligned on the longitudinal axis B, and a polarimeter. The invention also pertains to a method for measuring the stress inside an article made of transparent material. | 12-16-2010 |
20120140204 | KIT COMPRISING A SUPPORTING DEVICE FOR A TRANSPARENT ARTICLE AND A POLARIMETER - The present invention relates to a kit comprising a supporting device for maintaining a transparent article having a longitudinal axis A, a proximal end and a distal end, said supporting device including a proximal holder including a port intended to receive the proximal end of said article, and a distal holder including a receiving part intended to receive the distal end of said article, said port and said receiving part being aligned on the same longitudinal axis B, said supporting device further comprising compression means for putting said article under longitudinal compression directed towards a center of said article, when said article is mounted on said supporting device with its longitudinal axis A aligned on said longitudinal axis B, and a polarimeter. The invention also pertains to a method for measuring the stress inside an article made of transparent material. | 06-07-2012 |