Patent application number | Description | Published |
20110038440 | Process for Receiving a Signal and a Receiver - A process for receiving a GMSK-modulated signal which, for simultaneously transmitting two services, has an in-phase signal with a pseudo-random code that differs from the quadrature signal. By means of a decomposition filter in a reference signal branch detects one service independently of the other during the correlating with the received signal. | 02-17-2011 |
20120140857 | METHOD FOR SYNCHRONIZING A RECEIVER WITH A RECEIVED AMBIGUOUS SIGNAL HAVING A KNOWN NUMBER OF AT LEAST TWO PEAKS - Method and receiver synchronizing receiver with received ambiguous signal having at least two peaks. Method includes providing information about known transmitted signal having a number of at least two peaks, the information including number of peaks and distances between at least two peaks, determining ratios between peaks of known transmitted signal and assigning determined ratio value to each peak, and deducing theoretical auto-correlation function from known transmitted signal. Auto-correlation function has number of correlations corresponding to number of peaks in known transmitted signal and correlators of the auto-correlation function are provided in same distance and have the same relative ratio as peaks in known transmitted signal. Further includes tracking received signal with auto-correlation function so that correlator pattern of auto-correlation function is aligned with peak pattern of received signal by assigning each peak of the received signal to a correlator of the auto-correlation function, and identifying each peak. | 06-07-2012 |
20120319902 | ANTENNA BEAM FORMING FOR TRACKING A TRASMITTER SIGNAL - Receiver using antenna beam forming for tracking a transmitter signal and method for tracking the transmitter signal. The receiver includes a beam forming network comprising at least one beam forming channel for weighting each of N signals received from an N-element antenna array with an assigned weighting factor for forming a beam for tracking a transmitter signal of a certain transmitter, and a calibrator structured and arranged to calibrate the weighting factor (Wi) assigned to a signal (i) selected from the N signals by determining an average phase difference (ΔΦ) between consecutive samples of the selected signal and consecutive samples of a reference signal and structured and arranged to adapt the weighting factor (Wi) of the selected signal depending on the determined average phase difference (ΔΦ), where (i) is a number between 1 and N. | 12-20-2012 |
20130322505 | Method of Detecting a Direction of Arrival of at Least One Interference Signal and System to Carry Out Said Method - A method of detecting a direction of arrival of at least one interference signal interfering a wanted signal in a plurality of received signals involves receiving, by a number of antennas of an antenna array, a number of signals, identifying an interference signal in the received signals, applying a beam forming signal processing technique to the identified interference signal, and detecting the direction of arrival from the results of the beam forming signal processing. | 12-05-2013 |
20140056332 | Generating and Processing of CDMA Signals - Systems and methods for generating a CDMA signal s(t) comprising N components involves assigning to each of the N components one unique spreading sequence a | 02-27-2014 |
20140368383 | Method for Carrier-to-Noise Ratio Estimation in GNSS Receivers - A method for determining an indicator of an amount of noise comprised within a received signal within a satellite communication network or a GNSS involves extracting a received modulating signal from the received signal. An estimate of the transmission delay is determined based on the in-phase component of the modulating signal. A prompt replica of the modulating signal is generated using the estimate of the transmission delay. A prompt quadrature correlation of the quadrature component of the received modulating signal and of the quadrature component of the prompt replica is determined, and the indicator of the amount of noise comprised within the received signal is determined based on the prompt quadrature correlation. | 12-18-2014 |
20150226834 | Evaluating the Position of an Aerial Vehicle - A method for evaluating the position of an aerial vehicle involves receiving a radio signal from the aerial vehicle with an antenna array, determining the direction of arrival of the received radio signal, forming a reception beam of the antenna array depending on the determined direction of arrival for receiving one or more further radio signals from the aerial vehicle, calculating the ranging between the aerial vehicle and the antenna array based on a radio signal provided for ranging and received from the aerial vehicle, and evaluating the position of the aerial vehicle based on the calculated ranging, the determined direction of arrival, and the known position of the antenna array. | 08-13-2015 |
20150236751 | Receiver for Acquiring and Tracking Spread Spectrum Navigation Signals with Changing Subcarriers - A receiver acquires and tracks a spread spectrum navigation signal with changing subcarriers. The carrier signal changes between several subcarriers according to a hopping frequency and is modulated with data and a pseudorandom noise code signal. The receiver includes a carrier wipe off unit for down converting a received spread spectrum navigation signal from its carrier frequency to a baseband frequency, a frequency hopping wipe off unit for wiping off the hopping frequency from the received spread spectrum navigation signal, and a replica signal generation unit for generating at least one replica signal of the pseudorandom noise code signal for acquiring and tracking the received spread spectrum navigation signal after carrier wipe off. The generation of the at least one replica signal is performed depending on a sojourn time of the spread spectrum navigation signal at a subcarrier and a selected predetection integration time, and a correlation and integration unit correlates and integrates the received spread spectrum navigation signal after carrier wipe off with the at least one replica signal for the selected predetection integration time. | 08-20-2015 |