Telemetry receiver pseudorandom noise which compensates distortion by multiple path based dynamically adjust the delay interval between early and late correlations.

摘要

A signal receiver NOISE CODED pseudorandom (PRN) consisting of a code synchronization sampling circuit, a carrier MULTIPLE AND DIGITAL CIRCUITS AND MULTIPLES AUTOCORRELACIONADORES. SAMPLING CIRCUIT PROVIDES A DIGITAL SIGNAL SAMPLES RECEIVED EACH MADE OF MANY RECEIVERS CHANNEL CIRCUITS. CIRCUITS TIMING ARE PREFERABLY NOT CONSISTENT IN THE SENSE THAT track ANY phase shift of the received signal and thus adjusting the phase and frequency of a reference signal CARRIER GENERATED LOCALLY, EVEN IN THE PRESENCE OF A DISTORTION DOPPLER O ionospheric. THE AUTOCORRELACIONADORAS'S IN EVERY CHANNEL FORMING A phase locked DELAY (DLL) correlating the digital samples of the composite signal with the values ​​of CODES PRN GENERATED LOCALLY TO PRODUCE A PLURALITY OF SIGNALS CORELACION (IN ADVANCE, DELAY) O (PUNCTUAL, ANTICIPACION-LESS-DELAY). THUS, IN A WAY OF INITIAL ACQUISITION, the delay interval is relatively wide, the order of TIME PRN code chip APPROX. HOWEVER, ONCE REACHED THE CODES synchronism PRS, INTERVAL IS UNDER CODE DELAY, TO A FRACTION OF A TIME PRN code chip. THIS TEAM has great advantages, especially in environments where distortion due to propagation multipath composite signal received is of the same order of magnitude as A TIME PRN code chip.