Computer-implemented method, data processing device, computer program product and computer-readable storage medium for detecting global navigation satellite system signal spoofing
A computer-implemented method for detecting global navigation satellite system (GNSS) signal spoofing. The method comprises: storing (120), at a GNSS receiver, a sequence of samples of a predictable portion and an unpredictable portion of the GNSS signal, where the predictable portion comprises pred...
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Main Authors | , , , |
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Format | Patent |
Language | Chinese English |
Published |
05.05.2023
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Subjects | |
Online Access | Get full text |
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Summary: | A computer-implemented method for detecting global navigation satellite system (GNSS) signal spoofing. The method comprises: storing (120), at a GNSS receiver, a sequence of samples of a predictable portion and an unpredictable portion of the GNSS signal, where the predictable portion comprises predictable bits and the unpredictable portion comprises unpredictable bits; validating (125) the value of the unpredictable bit from which the unpredictable sample sequence is extracted; calculating (130) first and second partial correlations between an unpredictable, respectively predictable sequence of samples and a locally stored GNSS signal copy; calculating (140) a predefined metric from the composite valued partial correlation; and comparing (150) the predefined metric to a predefined threshold value. In zero-delay recurrent attacks, a spoofer must estimate unpredictable bits introduced by the GNSS authentication protocol and thereby introduce distortion into the signal. The method detects such distortion to ind |
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Bibliography: | Application Number: CN202180058240 |