一种主瓣保形的主副瓣联合空域抗干扰算法  

A Joint Anti-jamming Algorithm in Space-domain of Mainlobe and Sidelobe for Mainlobe Shape-preserving

作　　者：王明 郭山红[1] 丛潇雨 王宇娇 盛卫星[1] WANG Ming;GUO Shanhong;CONG Xiaoyu;WANG Yujiao;SHENG Weixing(School of Electronic and Optical Engineering,Nanjing University of Science and Technology,Nanjing Jiangsu 210094,China)

机构地区：[1]南京理工大学电子工程与光电技术学院,江苏南京210094

出　　处：《现代雷达》2025年第1期71-78,共8页Modern Radar

基　　金：江苏省优秀博士后人才基金(2023ZB124)。

摘　　要：提出了一种主瓣保形的主副瓣联合空域抗干扰算法。首先,应用基于特征空间的波达角度估计算法(ES-DOA)估计干扰源个数和角度;然后,应用阻塞矩阵-导向矢量对称扩展联合的预处理(BMP-SESV)方法,在消除主瓣干扰的同时恢复阵列自由度;最后,采用二次不等式线性约束的最小功率波束形成算法(QIC-LCMP),进一步抑制旁瓣干扰并提高波束形成稳健性。仿真结果显示,文中提出的联合空域抗干扰算法可有效解决主瓣展宽、波束方向偏移和旁瓣电平升高等问题,并具有良好的抗主副瓣干扰性能。A joint anti-jamming algorithm in space-domain of main and side lobe for main lobe shape preserving is proposed in this paper.Firstly,the DOA estimation algorithm based on feature space(ES-DOA)is applied to estimate the number and angle of interference sources.Then,the blocking matrix preprocess-symmetric extension of steering vectors joint(BMP-SESV)method proposed in this paper is applied to restore the array freedom while eliminating the main lobe interference.Finally,the minimum power beamforming algorithm QIC-LCMP with quadratic inequality linear constraint is adopted to further suppress sidelobe interference and improve beamforming robustness.The simulation results show that the proposed joint spatial anti-interference algorithm can effectively solve the problems of main lobe broadening,beam direction deviation,and sidelobe level rise,and has good anti-interference performance against main and sidelobe interference.

关 键 词：主瓣保形 主副瓣干扰抑制 阻塞矩阵预处理 导向矢量对称扩展 稳健波束形成 

分 类 号：TN972[电子电信—信号与信息处理]