航空兵器2025，Vol.32Issue(2)：74-79,6.DOI:10.12132/ISSN.1673-5048.2024.0149
基于稳健斜投影预处理的主瓣抗干扰算法
Main Lobe Anti-Interference Algorithm Based on Robust Oblique Projection Preprocessing
摘要
Abstract
In practical applications,the array received data often contains target signal components,using the co-variance matrix of the sample including the partial target signal instead of the covariance matrix of the interference noise will cause significant errors,especially when the number of array received snapshots is low.At the same time,the tar-get signal is often weak,and direct angle measurement will result in certain angle measurement errors,leading to errors in the target signal guided vector.These two non-ideal application scenarios will seriously deteriorate the algorithm's anti-interference performance.This paper proposes an anti-mainlobe interference algorithm based on robust oblique pro-jection preprocessing.Firstly,the interference noise covariance matrix is reconstructed based on the received data in-cluding the target signal,to minimize the impact of the target signal on the algorithm performance furthest.Secondly,based on the reconstructed interference noise covariance matrix and the high-precision estimated target steering vector,a robust oblique projection preprocessing matrix is jointly designed to effectively suppress the mainlobe interference.Fi-nally,the data after oblique projection preprocessing is processed by robust adaptive beam nulling to suppress the side-lobe interference.Simulation results show that the proposed algorithm can effectively suppress the mainlobe interference and sidelobe interference while eliminating the mainlobe distortion,and has good robustness to the non-ideal scenarios of the received data,which includes the target signal and exists angle measurement errors.关键词
主瓣干扰/稳健斜投影/协方差矩阵重构/自适应波束形成/目标信号导向矢量估计Key words
mainlobe interference/robust oblique projection/covariance matrix reconstruction/adaptive beam-forming/target signal guided vector estimation分类
军事科技引用本文复制引用
隋振兴,王铮,袁晓垒..基于稳健斜投影预处理的主瓣抗干扰算法[J].航空兵器,2025,32(2):74-79,6.基金项目
航空科学基金项目(2020Z037012004) （2020Z037012004）
