基于箕舌线函数的北斗导航信号干扰抑制算法OA北大核心

To optimize the anti-interference performance of Beidou satellite navigation receiver in complex electromagnetic environment,the Beidou navigation signal interference suppression algorithm based on the versoria function was proposed.The traditional minimum mean square adaptive algorithm was replaced by the improved versoria function to change the step size iteration formula and improve the convergence speed of algorithm with maintaining small steady-state error and low computational complexity.The error function was used to suppress the interference of the digital signal processing module of Beidou receiver,and the carrier tracking error and code tracking error after the suppression were simulated.The influence of the proposed algorithm on the tracking error accuracy of Beidou receiver was analyzed,and the pseudorange measurement error of receiver was calculated according to the interference ratio before and after interference suppression.The results show that the proposed algorithm can effectively reduce the impact of interference on the receiver performance and improve the tracking ability and positioning ability of receiver,and the positioning accuracy is nearly 3 times higher than that before the suppression with better stability.