Detection of, and processing of signals within a null zone by a global navigation satellite system receiver

A Global Navigation Satellite System (GNSS) receiver, comprising:

• a plurality of correlators;
• at least one non-transitory computer-readable medium;
• and
• at least one processor, which, when executing instructions stored on one or more of the at least one non-transitory computer-readable medium, has the GNSS receiver perform at least the following steps:
• calculating a filtered value of an integrated and summed correlator value for a punctual correlator of a satellite signal (“the calculated filtered punctual correlator value”);
• calculating an average of integrated and summed correlator values for a plurality of noise/offset correlators of the satellite signal (“the calculated average noise/offset correlator value”);
• calculating a signal energy loss parameter ESL of the satellite signal using the calculated filtered punctual correlator value and the calculated average noise/offset correlator value;
• and
• processing the satellite signal measurement based at least on the signal energy loss parameter ESL and a predetermined threshold ThSL presently corresponding to the punctual and noise/offset correlators of the satellite signal.

A modem chip capable of processing Global Navigation Satellite System (GNSS) signals, comprising:

• a plurality of correlators;
• at least one non-transitory computer-readable medium;
• and
• at least one processor, which, when executing instructions stored on one or more of the at least one non-transitory computer-readable medium, has the modem chip perform at least the following steps:
• calculating a filtered value of an integrated and summed correlator value for a punctual correlator of a satellite signal (“the calculated filtered punctual correlator value”);
• calculating an average of integrated and summed correlator values for a plurality of noise/offset correlators of the satellite signal (“the calculated average noise/offset correlator value”);
• calculating a signal energy loss parameter ESL of the satellite signal using the calculated filtered punctual correlator value and the calculated average noise/offset correlator value;
• and
• processing the satellite signal measurement based at least on the signal energy loss parameter ESL and a predetermined threshold ThSL presently corresponding to the punctual and noise/offset correlators of the satellite signal.