GNSS SATELLITE SIGNAL INTERFERENCE HANDLING METHOD AND CORRELATOR IMPLEMENTING THE SAME
First Claim
1. A GNSS (Global Navigation Satellite System) satellite signal handling method comprising steps of:
- receiving a GNSS satellite signal;
calculating correlation results of a plurality of code chip hypotheses for a specific Doppler bin; and
analyzing said correlation results to determining whether said specific Doppler bin is polluted with interference.
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Accused Products
Abstract
A GNSS satellite signal handling method is disclosed. For a specific Doppler bin, when a peak is found, it is checked if the specific Doppler bin is polluted with interference by detection. If the detection result indicates that the specific Doppler bin is polluted with interference, a threshold, which is used to determine whether the actual signal peak is found or not, is then raised to a higher level, so as to increase the searching reliability. To detect interference, it is determined whether the specific Doppler bin is polluted by comparing a statistical value of correlation results of a plurality of code chip hypotheses with a reference or by checking if there are plural peaks existing in the power spectrum.
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Citations
21 Claims
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1. A GNSS (Global Navigation Satellite System) satellite signal handling method comprising steps of:
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receiving a GNSS satellite signal; calculating correlation results of a plurality of code chip hypotheses for a specific Doppler bin; and analyzing said correlation results to determining whether said specific Doppler bin is polluted with interference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A correlator comprising:
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an integration block for calculating correlation results of a plurality of code chip hypotheses for a specific Doppler bin; and a processor for analyzing said correlation results to determine whether said specific Doppler bin is polluted with interference. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification