Patent ID: 8659475

Claim:
A method for detecting distortion of a GNSS signal transmitted by at least one GNSS satellite and received by at least one GNSS receiver, said distortion being caused by a GNSS signal generation defect, the method comprising: determining at least one autoregressive parametric model of the GNSS signal at the output of a correlation stage included in said GNSS receiver; computing at least one linear prediction error e(n) between an output signal of the correlation stage and said at least one autoregressive parametric model; comparing the at least one linear prediction error e(n) to a detection threshold; and determining the distortion of the GNSS signal when the at least one linear prediction error exceeds said detection threshold, wherein the determining of the at least one autoregressive parametric model, the computing, the comparing, and the determining of the distortion are performed by the least one GNSS receiver.