| CENTRE NATIONAL D'ETUDES SPATIALES Patent applications |
| Patent application number | Title | Published |
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| 20120116734 | Method of characterizing an electrical defect affecting an electronic circuit, related device and information recording medium - The method according to the invention consists of producing a real cartography of the magnetic field radiated by the circuit placed in a predetermined operating state. It includes the following steps: a) applying a transform to an initial hypothesis on the nature of the defect, to obtain a current hypothesis, b) superimposing the current hypothesis on an initial topology of the circuit to obtain a current topology; c) simulating the magnetic field generated by the current topology, so as to obtain a current simulated cartography; d) estimating the current value of a correlation function between the measured cartography and the current simulated cartography; and e) iterating steps a) to d) to seek a maximum of the correlation function by modifying the value of said characteristic parameter of the defect. | 05-10-2012 |
| 20120092225 | Deformable reflecting membrane for reconfigurable reflector, reconfigurable antenna reflector and antenna including such a membrane - A deformable reflecting membrane includes, in thickness, an alternating superposition of layers of conductive elastomer and at least two reinforcing layers, each reinforcing layer being divided up into individual patches spaced apart from one another and distributed periodically in the plane of the reinforcing layer. The membrane is applicable notably to the space domain. | 04-19-2012 |
| 20120032867 | WAVEGUIDE ORTHOMODE TRANSDUCER - A waveguide orthomode transducer, comprises: a junction having a main waveguide and four auxiliary waveguides lying along the two orthogonal main axis of the junction and defining four quadrants; a combination network comprising: two magic tees, each having an E-port, two opposed common-ports, and a H-port; an H-plane tee junction having a Σ-port and two opposed common-ports; and an E-plane tee junction having a Δ-port and two opposed common-ports. Two auxiliary waveguides define a first quadrant are respectively connected to the common-ports of one of the magic tees and the two other secondary waveguides defining a second quadrant opposite to the first quadrant are connected to the common-ports of the other magic tee. The tee junctions are used to connect similar magic tee ports so that the transducer separates towards two different outputs two orthogonally polarized signals entering at the main waveguide. Reciprocally, two signals entering respectively in the Σ-port and the Δ-port of the tees junctions are combined with orthogonal polarizations in the main waveguide. | 02-09-2012 |
| 20120001799 | GEOPOSITIONING METHOD USING ASSISTANCE DATA - In order to enable a geopositioning receiver of a user to resolve phase ambiguities without necessarily using multi-frequency observations, assistance data is developed thanks to measurements made at a reference network ( | 01-05-2012 |
| 20110280347 | Method for demodulating signals from a multi-access system able to collide and equipment for implementing same - A method for demodulating time-multiplexed signals able to mutually collide, in particular in the case of an AIS (Automatic Identification System), being a communications system between ships allows collisions between these ships to be limited and allows the maritime traffic in view from the coasts to be monitored thanks to coastal stations that listen to the communications. When these colliding signals are sufficiently “distinct” (in frequency, in power or in time), algorithms exist for discriminating between them. The demodulator offers the possibility of demodulating two colliding signals, whose collision parameters (difference in frequency, in power or their non-synchronization) are sufficiently small to make them virtually inaccessible otherwise. The method and equipment allow the satellite AIS system to utilize cases of signal collisions that were hitherto detrimental in order to improve the overall performance. | 11-17-2011 |
| 20110279320 | SYSTEM FOR EMITTING ELECTROMAGNETIC BEAMS, COMPRISING A NETWORK OF ANTENNAE - This invention relates to a system for emitting electromagnetic beams, comprising a network of elements for the far-field emission of electromagnetic beams, the signals coming from and/or arriving towards each element weighted by excitation coefficients digitally determined by calculation means. According to the invention, the system comprises: a second separate network of sensors arranged close to the network of radiating elements in order to measure the near field radiated by the elements, means for calculating the far field radiated by the network from the near field actually measured by the sensors, and means for calculating the correction of the excitation coefficients of the elements from the difference between the far field calculated from the measurement of the near field and a pre-determined nominal far field. | 11-17-2011 |
| 20110264799 | METHOD FOR MEASURING THE PERFORMANCE OF AN IP NETWORK AND ASSOCIATED SYSTEM - The invention relates to a method for measuring the performance of a network ( | 10-27-2011 |
| 20110210888 | PROCESSING OF RADIONAVIGATION SIGNALS USING A WIDE-LANE COMBINATION - A method for processing radionavigation signals coming from satellites that broadcast the radionavigation signals on at least two distinct frequencies, comprises
| 09-01-2011 |
| 20110199616 | PROCESS AND INSTRUMENT FOR RECONSTRUCTION OF AN IRREGULARLY SAMPLED NARROW-BAND SIGNAL - According to a first aspect the invention relates to a reconstruction process of a narrow-band signal acquired by an instrument producing irregular sampling, in which two series of samples are acquired at the same sampling period, the two series being offset relative to one another such that the sampling errors are identical or quasi identical over both series. According to a second aspect, the invention relates to an instrument configured to carry out the process according to the first aspect of the invention. | 08-18-2011 |
| 20110185766 | Refrigerator, and Method for Producing Very Low Temperature Cold - The invention relates to a method for producing very low temperature cold through a dilution cycle wherein a two-phase mixture of the two isotopes | 08-04-2011 |
| 20110129002 | METHOD FOR THE ACQUISITION OF RADIONAVIGATION SIGNALS CARRYING SPREADING CODE WITH A QUASI-INFINITE PERIOD - A method for the acquisition of a radionavigation signal carrying a spreading code with a quasi-infinite period, where the signal is sampled in baseband on a delay line and correlated with a local spreading code replica, the sampled signal is shifted on the delay line from one correlation to the other, where in order to correlate the signal with the local replica of the code, a plurality of sequences of the spreading code are generated, the code sequences being of the same duration, equal to the duration of the signal sampled on the delay line, and associated with the consecutive time ranges in the temporal alignment search space, where each of the code sequences is correlated with the signal sampled in a respective correlation operation, the correlation operations being executed in parallel for the different sequences of code. | 06-02-2011 |
| 20110050498 | CLOSED SHAPE BEAM FORMING NETWORK - The invention concerns a network for distributing a plurality of input microwave signals into a plurality of output signals having a Gaussian amplitude and in-phase distribution per said input signal, the network comprising: a plurality of N input ports providing N different input signals; a plurality of M output ports, M being a multiple number of N; a plurality of P layers disposed between the inputs ports and the outputs ports, the input signals being distributed through these layers, each layer comprising an arrangement of power combiners (C) and/or power dividers (D), the arrangement is self similar with an angular rotation of k2ρ/N radian around the symmetry axis (AA′) of the polygonal closed shape formed by said input ports, k being an integer comprised between 1 and N. | 03-03-2011 |
| 20110013675 | METHOD OF RECEPTION AND RECEIVER FOR A RADIO NAVIGATION SIGNAL MODULATED BY A CBOC OR TMBOC SPREAD WAVEFORM - To receive a radio navigation signal modulated by a modulation waveform, the modulation waveform comprising a component BOC(n | 01-20-2011 |
| 20100321261 | ANTENNA WITH RESONATOR HAVING A FILTERING COATING AND SYSTEM INCLUDING SUCH ANTENNA - The invention relates to an antenna for transmitting or receiving electromagnetic waves at a working frequency f | 12-23-2010 |
| 20100244657 | HALL EFFECT ION EJECTION DEVICE - The disclosure relates to a Hall-effect ion ejection device that comprises a longitudinal axis substantially parallel to the ion ejection direction, and comprises at least: a main ionization and acceleration annular channel, the annular channel being open at its end; an anode extending inside the channel; a cathode extending outside the channel at the outlet thereof; a magnetic circuit for generating a magnetic field in a portion of the annular channel, said circuit including at least an annular inner wall, an annular outer wall and a bottom connecting the inner and outer annular walls and defining the downstream portion of the magnetic circuit; characterised in that the magnetic circuit is arranged so as to create at the outlet of the annular channel a magnetic field independent from the azimuth. | 09-30-2010 |
| 20100241379 | METHOD OF ANALYZING AN INTEGRATED CIRCUIT, METHOD OF OBSERVATION AND THEIR ASSOCIATED INSTALLATIONS - A method for analyzing an integrated circuit includes: a step ( | 09-23-2010 |
| 20100239158 | FINE STEREOSCOPIC IMAGE MATCHING AND DEDICATED INSTRUMENT HAVING A LOW STEREOSCOPIC COEFFICIENT - The invention relates to a method and system for the acquisition and correlation matching of points belonging to a stereoscopic pair of images, whereby the pair is formed by a first image and a second image representing a scene. According to the invention, the two images of the pair are acquired with a single acquisition instrument ( | 09-23-2010 |
| 20100194665 | ANTENNA OF THE HELIX TYPE HAVING RADIATING STRANDS WITH A SINUSOIDAL PATTERN AND ASSOCIATED MANUFACTURING PROCESS - The invention relates to an antenna of the helix type, comprising a plurality of radiating strands wound in a helix in an axisymmetric form ( | 08-05-2010 |
| 20100156752 | HELIX ANTENNA - The invention relates to a helix antenna comprising a plurality of radiating elements wound helically in an axisymmetric shape ( | 06-24-2010 |
| 20100154558 | METHOD AND INSTALLATION FOR EXPOSING THE SURFACE OF AN INTEGRATED CIRCUIT - The invention relates to a method for exposing an integrated circuit by ablating the polymer coating initially covering the integrated circuit, characterised in that it comprises the combined application of a laser radiation and a plasma onto the coating initially covering the integrated circuit. | 06-24-2010 |
| 20100134800 | METHOD FOR CALIBRATING INTERPIXEL GAINS OF AN INTERFEROMETER - A method is provided to calibrate a detection array used for acquiring an image of an interferogram at an instrument. A first interferogram and at least two shifted interferograms are elaborated at the instrument by creating a number of optical path differences, so at least three samples are on a sine wave portion for each optical path difference. A function coinciding with the sine wave portion is determined by interpolation. A calibration coefficient is determined from the function for each optical path difference. | 06-03-2010 |
| 20100085252 | METHOD FOR PROCESSING RADIONAVIGATION SIGNALS - The satellites of a constellation of satellites each transmit, on distinct frequencies, a first and a second radionavigation signal, respectively. Each station of a reference network from which a satellite is visible performs non-differentiated measurements of code and phase for each of the two signals originating from the satellite and deduces therefrom a raw value of the widelane ambiguity. An internal delay of the satellite and a whole value of the widelane ambiguity are determined, in the network, on the basis of this raw value. The method comprises the steps: -receiving the first and second radionavigation signals at the level of the reference receiver; -performing, with the aid of the reference receiver and for each of the first and second signals received, a non-differentiated measurement of code and a non-differentiated measurement of phase; -calculating the raw value of the widelane ambiguity on the basis of the non-differentiated measurements of code and phase; and -fixing the internal delay of the satellite and the whole value of the widelane ambiguity on the basis of the raw value for the reference receiver. | 04-08-2010 |
| 20100060543 | ANTENNA HAVING OBLIQUE RADIATING ELEMENTS - The invention relates to an antenna comprising a plurality of metallic elements ( | 03-11-2010 |
| 20100026606 | ANTENNA USING A PBG (PHOTONIC BAND GAP) MATERIAL, AND SYSTEM AND METHOD USING THIS ANTENNA - An antenna uses a photonic forbidden band (PFB) material in which, by default, a surface ( | 02-04-2010 |
| 20090289847 | METHOD OF RECEPTION AND RECEIVER FOR A RADIO NAVIGATION SIGNAL MODULATED BY A CBOC SPREAD WAVE FORM - To receive a radio navigation signal modulated by a composite wave form, the composite wave form comprising a linear combination with real coefficients of a component BOC(n | 11-26-2009 |
