Analysis of the Influence of STAP on BOC Signal

摘要

Due to the non-linearity of the space-time adaptive anti-jamming weighting process, satellite signal correlation peaks will inevitably be shifted and distorted, which will cause the receiver positioning accuracy to decrease. At present, the new generation of satellite navigation system has adopted a new BOC signal system. Compared with BPSK modulation, BOC modulated signals have split spectrum characteristics in the spectrum. In the current research, there are few studies on the effects of various anti-interference algorithms on BOC signals in anti-interference applications. Therefore, this paper studies the effect of anti-interference processing of adaptive array antenna on BOC signal. Based on the theoretical derivation, the effects of several typical algorithms on the distortion of the BOC signal correlation peaks are simulated and analyzed. A low distortion beamforming algorithm is proposed, and its performance in different interference environments is simulated and verified. Finally, some reasonable suggestions are proposed. The research results have certain guiding significance for the application of BOC signal under anti-interference conditions.