A method of spoofing signal parameter estimation for gnss signal receiver
A technology of signal parameters and receivers, which is applied in satellite radio beacon positioning systems, instruments, measuring devices, etc., can solve the problem of few parameters of spoofing signals, and achieve the goal of improving anti-spoofing ability, improving utilization rate, and strong anti-spoofing ability Effect
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[0060] The present invention will be described in detail below with reference to the accompanying drawings.
[0061] like figure 2 As shown in the figure, the fitting curve of the receiver to the signal with an interference-to-signal ratio of 6.02dB (the power of the spoofing signal is twice that of the GNSS signal) is the fitting curve of the correlation result. ) 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, on the contrary, in order to make the results of E and L the same, the receiver is successfully deceived.
[0062] like figure 1 A method for estimating spoofing signal parameters with a GNSS receiver interference-to-signal ratio of 6.02 dB is shown, including step (1) comparing the digital intermediate frequency signal from the GNSS receiver antenna and the local phase difference generated according to the Doppler frequency output by the carrier NCO ...
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