| Patent Number |
Title Of Patent |
Date Issued |
| 6466566 |
Low complexity adaptive interference mitigating CDMA detector |
October 15, 2002 |
| An adaptive signal receiver comprising at least one blind detection unit arranged to be robust to asynchronous multiple access interference (MAI). The useful signal is detected using a user signature sequence comprised of a fixed term and a complex adaptive part having a length that exte |
| 6307502 |
Radiometry system with an aperture synthesis type antenna and its application to hyper-frequency |
October 23, 2001 |
| A radiometry system including an aperture synthesis antenna array type, including plural antenna elements, distributed in an antenna plane relative to at least one axis, according to a determined law. Each antenna element includes first and second coupling probes sensitive to hyper-f |
| 6181412 |
Incoherent doppler laser detection and ranging system |
January 30, 2001 |
| The invention relates to an incoherent Doppler laser detection and ranging system of the Lidar type comprising an emission laser and a receiver device including at least one telescope, an edge filter, and processor means responsive to the power P.sub.T transmitted by the filter. The |
| 6122053 |
Apparatus for measuring particle fallout on a surface using a telltale plate |
September 19, 2000 |
| An apparatus for measuring fallout of particles on a surface of the type using a telltale plate which is exposed for a particular time period to the fallout of the particles. The apparatus illuminates the telltale plate when it is inserted into the measuring apparatus with the illuminati |
| 6085871 |
Lubrication system for a mechanism, in particular for a rotary bearing in a spacecraft |
July 11, 2000 |
| The invention relates to a lubrication system for a mechanism (27), on-board a spacecraft. It comprises a non pressurized tank (20) communicating with the mechanism (27) via a tube (220). A piston (23) closes the tube (220) while the mechanism is at rest. The piston (23) is controlle |
| 6069583 |
Receiver for a navigation system, in particular a satellite navigation system |
May 30, 2000 |
| The invention relates to a navigation system receiver comprising at least two antennas, one of which is a "reference" antenna. A multiplexer multiplexes the signals from the antennas, and a first processor situated downstream from the multiplexer delivers at least one navigation paramete |
| 6057799 |
Interferometric hyperfrequency radiometry system with mechanical scanning |
May 2, 2000 |
| The invention concerns an interferometric hyperfrequency radiometry system comprising an antenna being subject to a rotation movement around the vertical direction, with a boresight axis forming an angle with a nadir direction so as to obtain a conical scanning. The antenna is a planar |
| 5929804 |
Reconfigurable zonal beam forming system for an antenna on a satellite in orbit and method of op |
July 27, 1999 |
| A reconfigurable zonal beam forming system for an antenna on a satellite in orbit includes, in cascade, a signal splitter applying signals of equal amplitude to each channel, first variable phase-shifters and amplifiers and a Butler matrix the outputs of which are connected via second va |
| 5872545 |
Planar microwave receive and/or transmit array antenna and application thereof to reception from |
February 16, 1999 |
| A receive and/or transmit microwave planar array antenna is of the multiplate stack type comprising a plurality of slot radiating elements disposed along the rows and the columns of a matrix. The basic stack comprises three ground plates incorporating openings and two independent exc |
| 5852423 |
Variable pointing antenna mount, suitable for satellite telecommunication antennas |
December 22, 1998 |
| The disclosed mount comprises a first dihedral (ABC, BCD) of which one of the planes (ABC) is borne on a support base; means (6) for adjusting the angle (.alpha.) of said first dihedral; a second dihedral (BCD, BDE) of which one of the planes (BCD) is common to the first dihedral and the |
| 5839053 |
System for transmitting radio signals from mobile terminals to provide space diversity for uplin |
November 17, 1998 |
| The invention concerns a system for transmission of spatial diversity radio signals via a geostationary main communication satellite and one or more auxiliary satellites "colocated" in the same orbit. The distance between an auxiliary satellite and the main satellite is in the range from |
| 5837930 |
Propellants, in particular for the propulsion of vehicles such as rockets, and process for their |
November 17, 1998 |
| Ergols, particularly for propelling missiles, containing at least one oxidant, a fuel and an energy-releasing binder. The oxidant is selected from the group which includes a nitroformate of a nitrogen compound, particularly hydrazinium or ammonium nitroformate, and a perchlorate of a |
| 5557530 |
System for synthesizing microwave filters in a rectangular waveguide |
September 17, 1996 |
| A system for synthesizing a microwave filter including a plurality of resonators having no tuning elements, in particular waveguide filters for use in satellite telecommunications networks. Signals representing the coupling coefficients of the coupling elements having a finite thickness |
| 5546087 |
Altimetry method |
August 13, 1996 |
| An altimetry method uses one or more sources of opportunity, for example transmitters on satellites of the "GPS" satellite navigation system. One or more receivers on board an aircraft or a satellite in low Earth orbit are used. Multiple correlation is applied between the direct signal |
| 5542988 |
Photocell, its method of manufacture, and a solar panel comprising such cells |
August 6, 1996 |
| The present invention relates to a photocell including means for providing protection against the accumulation of electrostatic charge, to a method of manufacturing it, and to a solar panel including such cells.A photocell of the invention includes a circuit for drawing off electrostatic |
| 5410324 |
Method and apparatus for determining antenna radiation patterns |
April 25, 1995 |
| A compact range for the determination of the radiation pattern of a first antenna (1), comprises a focusing system (3) and apparatus (2) supporting the first antenna in the quiet zone of the focusing system. For that purpose, the base comprises a modulated-retransmission probe array (6, |
| 5327455 |
Method and device for multiplexing data signals |
July 5, 1994 |
| Before modulating the transmission carrier, each binary data signal is individually coded as a discrete symbol belonging to a PSK constellation of N symbols which are combined with N discrete points to produce two binary signal streams of which the first is in phase with the incoming |
| 5264861 |
Circular polarization antenna |
November 23, 1993 |
| A circular polarization antenna whose radiation pattern is in the shape of a body of revolution about an axis and has a radiation minimum in the direction of this axis comprises a reflective conductive surface which is essentially in the shape of a body of revolution about the axis. A |
| 4979221 |
Method and apparatus for sub-pixel centroiding of a photon event |
December 18, 1990 |
| A photon signal received on a CCD is digitized and coupled to a 3.times.3 pixels data analysis array (DAA). The digital signals read out from the penultimate three pixels of the DAA are used to address a first look up table held in a memory, the digital signals read out from the last thr |
| 4412851 |
Cryogenic apparatus suitable for operations in zero gravity |
November 1, 1983 |
| The invention relates to cryogenic apparatus of the open cycle kind comprising a reservoir 1 for storing cryogenic fluid in liquid-vapor phase equilibrium and a phase separator 2 presenting an inlet 3 communicating with the inside of the reservoir and an outlet 4 for liberating gas, the |
