Patent application number | Description | Published |
20090027261 | METHOD FOR THE CORRECTION, UPON RECEPTION IN A MOVING OBJECT, OF FAULTS AFFECTING THE TRANSMISSION OF BINARY OFFSET CARRIER RADIONAVIGATION SIGNALS - A subject of the present invention is a method for the correction, upon reception in a moving object, of faults affecting the transmission of binary offset carrier radionavigation signals, enabling this correction to be carried out in a simple and reliable manner. The method of the invention is characterized in that each component of the signal received by a conventional BPSK demodulation method is demodulated, in that the phase differential of the two signals is compensated for, source by source, and in that a coherent tracking is carried out by summing the complex outputs of the demodulation processing. | 01-29-2009 |
20090219201 | GNSS RECEIVER WITH ENHANCED ACCURACY USING TWO SIGNAL CARRIERS - A satellite positioning receiver is disclosed having at least one receive channel. Each receive channel is intended to perform a combined processing of a first S | 09-03-2009 |
20090259707 | METHOD AND DEVICE FOR FAST CORRELATION CALCULATION - The field of the invention is that of the reception of a radionavigation signal originating from a satellite positioning system such as the GPS system. The present invention concerns a method for calculating correlations between a first sequence and a second sequence, said first sequence and said second sequence having a duration D | 10-15-2009 |
20100026567 | HYBRID INS/GNSS SYSTEM WITH INTEGRITY MONITORING AND METHOD FOR INTEGRITY MONITORING - The invention pertains to the monitoring of the integrity of position and speed information arising from a hybridization between an inertial reference system and a satellite-based positioning receiver. The invention relates more precisely to a navigation apparatus known in the art by the name INS/GNSS system (for “Inertial Navigation System” and “Global Navigation Satellite System”) hybridized in closed loop. | 02-04-2010 |
20100103988 | DEVICE FOR RECEIVING SATELLITE SIGNALS INCLUDING A PHASE LOOP WITH DELAY COMPENSATION - The general field of the invention is that of devices for receiving radio-navigation signals by satellite, said received signals being transmitted at a carrier frequency, said device including at least means for generating a local signal at a local frequency and a tracking device including a feedback loop called carrier loop for phase-locking the local frequency on the carrier frequency, said loop including a hardware portion and a software portion. The software portion performs the functions of discrimination of the phase of the correlated signal and filtering of said phase. In the various devices according to the invention, the software portion also includes correlation functions mainly dependent on the linear variation coefficients between the local phases φ | 04-29-2010 |
20100245168 | Methods of Calculating the Position of a GNSS Receiver from Two-Frequency and Single-Frequency Pseudo-Measurements - The method of determination of the position of a mobile receiver using at least four satellites of which at least one first satellite transmits a first signal on one frequency, the broadcasting of the first signal being single-frequency, and of which at least one second satellite transmits second and third signals respectively on a first and a second frequency, the broadcasting of the signals being two-frequency, the receiver including means for reception of at least two frequencies, makes it possible to determine the position by a calculation of at least four pseudo-distances corresponding to the distances between each satellite and the receiver. | 09-30-2010 |
20100254439 | Method of Resolving Ambiguity, Method of Location of a Receiver by Radionavigation Comprising an Ambiguity Resolution Step and Location Receiver - Method of resolving ambiguity for determining the main peak of the autocorrelation function of signals transmitted by a set of satellites and received by a receiver of a radionavigation system, a signal received originating from a satellite comprising two received spectral components right and left, the said method comprising the following steps:
| 10-07-2010 |
20110181463 | SATELLITE-BASED POSITIONING RECEIVER - A satellite-based positioning receiver includes processing channels, each processing channel being associated with a respective satellite from among N satellites, and an extended Kalman filter for performing a vector tracking for the set of satellites using signals received from the satellites. The extended Kalman filter performs a resetting on the basis of the phase error and code error received directly from the phase and code discriminators, of each channel, and the receiver includes first means for calculating the code-wise and carrier-wise control signals for the said code phase and carrier phase numerically-controlled oscillators, on the basis of data provided by the said extended Kalman filter, for each channel. | 07-28-2011 |
20110254732 | SYSTEM AND METHOD FOR MULTI-CORRELATION WITH MODULATION-ADAPTED FILTER FOR THE FAST ACQUISITION AND THE TRACKING OF A RADIO NAVIGATION SIGNAL IN THE PRESENCE OF JAMMING - A system for receiving a radionavigation signal, notably in a jammed medium, emitted by a satellite of a satellite positioning system, includes: at least one first multi-correlator and at least one second multi-correlator disposed in parallel and operating respectively at a frequency; filtering means, disposed upstream of said multi-correlators; a delay line, disposed on the branch, between the filtering means and the second multi-correlator; means for sub-sampling at the frequency adapted for sub-sampling the signal transmitted directly and by branching with delay by the filtering means; and demodulation means eliminating the Doppler effect, disposed between the sub-sampling means and the first and second multi-correlators. | 10-20-2011 |
20110285588 | DEVICE FOR DISCRIMINATING THE PHASE AND THE PHASE VARIATION OF A SIGNAL - In a phase discriminator device for receiving, as input, a complex signal whose argument represents a phase error, and for producing, as output, an estimate of the phase error for each signal sample Z | 11-24-2011 |
20120281735 | Satellite-Based Positioning System Reception Device Comprising a Function for Detecting False Lock-Ons - A satellite-based positioning system reception device comprises a function for detecting false lock-ons based on a linear combination of complex signals arising from correlation pathways between a signal received from a satellite and a prompt local code and a plurality of local codes shifted by determined delays with respect to the prompt local code. An advantage is that the function for detecting false lock-ons makes it possible to remedy the false lock-ons due to multi-path phenomena. | 11-08-2012 |
20130044027 | METHOD AND DEVICE FOR CALIBRATING A RECEIVER - The invention relates to a method for calibrating an antenna of a receiver of signals (s | 02-21-2013 |
20130090078 | METHOD AND SYSTEM FOR LOCATING INTERFERENCES BY FREQUENCY SUB-BAND - Method and system for locating sources interfering on a signal received by a receiver comprising an array of antennas, comprising the following steps:
| 04-11-2013 |
20130090079 | RECEPTION SYSTEM INCLUDING A MECHANISM COUNTERING PULSED INTERFERENCE - A system for receiving an analogue signal e including means for amplifying and digitizing said signal in order to obtain a digitized signal e | 04-11-2013 |
20130099952 | Analog-Digital Conversion System Comprising a Double Automatic Gain Control Loop - An analog-digital conversion system comprising at least one variable gain amplifier amplifying an input signal e, an analog-digital converter CAN digitizing said signal e, an interference-suppressing digital processing module, processing the digitized signal, also comprises a first automatic gain control AGC loop, called the analog AGC loop, that compares an estimate of the output power of the CAN converter with a control setpoint g | 04-25-2013 |
20130249735 | DEVICE FOR RECEIVING RADIO-NAVIGATION SIGNALS WITH MULTIPLE ANTENNAS AND COMMON SYNCHRONIZATION SLAVING - The invention relates to a device for receiving satellite radio-navigation signals comprising a plurality of receiving antennas forming an antenna array. The invention consists in using a plurality of antennas disposed around the circumference of a carrier, in demodulating the signals received by each antenna separately and then in combining the various demodulated signals, thereby amounting to effecting a beam forming in an equivalent antenna pattern. The invention then requires only a single synchronization slaving for the set of demodulation pathways. | 09-26-2013 |
20140091966 | MULTI-ANTENNA RADIO-NAVIGATION SIGNALS RECEPTION DEVICE - The invention relates to a device for receiving satellite radio-navigation signals comprising a plurality of receiving antennas forming an antenna array. The invention consists in using a plurality of antennas disposed around the circumference of a carrier and in demodulating the signals received by each antenna separately. The diversity of the demodulation chains is utilized to compensate the signal loss on one of the chains when the corresponding antenna experiences a signal loss due to the masking of the satellite by the carrier. | 04-03-2014 |
20140292575 | METHOD FOR FORMATION OF A SIGNALS ARRAY FROM A RECEIVER OF SIGNALS FROM A SATELLITE NAVIGATION SYSTEM IN ORDER TO IMPROVE ITS RESISTANCE TO SCRAMBLING OR INTERFERENCE - Method for formation of a signals array from a receiver ( | 10-02-2014 |
20140292576 | METHOD FOR DETECTING SIGNALS INTENDED AS A DECOY FOR A RECEIVER OF SIGNALS FROM A SATELLITE NAVIGATION SYSTEM AND ASSOCIATED RECEIVER - Method for detecting signals intended as a decoy for a receiver of signals from a satellite navigation system, the receiver being equipped with an antenna using controlled reception pattern sensors, comprising the following steps consisting in, for each satellite:
| 10-02-2014 |