Global navigation satellite system (GNSS) signal receiver spoofing signal parameter estimating method
A technology of signal parameters and receivers, applied in satellite radio beacon positioning systems, measuring devices, instruments, etc., can solve the problem of less spoofing signal parameters, improve anti-jamming and anti-spoofing capabilities, improve utilization, and improve The effect of stability and precision
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[0060] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0061] Such as figure 2 As shown, the fitting curve of the receiver tracking correlation results for the signal with an interference-to-signal ratio of 6.02dB (the power of the spoofing signal is twice that of the GNSS signal). ) fitting results. It can be seen that the traditional loop fitting result represented by the A curve not only does not reflect the existence of the spoofing signal, but in order to make the results of E and L the same, the receiver is successfully deceived.
[0062] Such as figure 1 A kind of GNSS receiver interference-to-signal ratio shown is 6.02dB spoofing signal parameter estimation method, comprises step (1) the phase difference that the digital intermediate frequency signal from GNSS receiver antenna and the Doppler frequency that local output according to carrier NCO produces Two channels of sine / cosine signals with 90 degrees are ...
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