Parameter Optimization of Frequency Domain Narrowband Interference Suppression Algorithm in Satellite Navigation Receivers

When the satellite navigation signals´ interference power exceeds the receiver interference tolerance, the interference must be suppressed to ensure that the receiver works normally. Through analyzing the principle of the overlap window-based frequency domain narrowband interference suppression algorithm, this paper proposes using the reverse windowing approach to reduce the satellite signal distortion, and gives the selection basis of the frequency-domain FFT points combined with engineering practice, to further reduce the impact on self-correlation property of signal and local PN code.