The Impact of Narrow-band Interference Rejection Algorithm on Acquisition and Tracking

In order to obtain the impact of narrow-band interference rejection algorithm on the performance of satellite navigation receiver, the principle of frequency domain narrow-band interference rejection technique in satellite navigation receiver and the frequency domain narrow-band interference rejection method with overlap windowing are analyzed.The rejection ability of the algorithm for different interference is analyzed.The influence of the algorithm for the performance of acquisition and tracking is researched based on these analyses.Simulations with one or more embodiments of the present disclosure have shown that the algorithm can suppress the single-tone interference, multi-tone interference and sweep interference effectively.The interference rejection performance using Blackman windowing is better than using Hamming windowing.When the jam-to-signal ratio is 60 dB, the SNR losses is about 1dB in the acquisition part and the SNR losses is about 0.8dB in the tracking part.As a whole, the algorithm can suppress the narrow-band effectively and has brought little effect on the acquisition and tracking