基于特征投影预处理的抗主副瓣干扰算法  

Mainlobe and Sidelobe Anti-interference Algorithm Based on Eigen-projection Preprocessing

作　　者：赵嘉斐 蒋荣堃 李然 孙慧 ZHAO Jiafei;JIANG Rongkun;LI Ran;SUN Hui(Beijing Institute of Remote Sensing Equipment,Beijing 100854,China;Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京遥感设备研究所,北京100854 [2]北京理工大学,北京100081

出　　处：《制导与引信》2025年第1期9-14,23,共7页Guidance & Fuze

摘　　要：针对自适应波束形成(adaptive beamforming,ADBF)技术抗主副瓣干扰存在天线方向图主瓣分裂进而影响测角性能的问题,提出了一种特征投影预处理(eigen-projection preprocessing,EPB)结合自适应波束形成的抗主副瓣干扰算法。首先利用特征投影预处理剔除主瓣干扰,再利用ADBF技术抑制副瓣干扰,达到剔除主瓣干扰(期望方向除外)、主瓣保形并抑制副瓣干扰的效果。仿真结果验证了该算法具备抗主副瓣干扰的能力,且不影响测角性能。An anti-interference algorithm combining eigen-projection preprocessing(EPB)with adaptive beamforming(ADBF)technology was proposed to suppress both mainlobe and sidelobe interference,specifically addressing the issue of antenna pattern mainlobe distortion that impacted angle measurement performance.The proposed algorithm firstly employed the eigen-projection preprocessing method to eliminate mainlobe interference,subsequently suppressed sidelobe interference utilizing ADBF.This approach achieved the desired effect of removing mainlobe interference(excluding the intended direction)while preserving the mainlobe shape and concurrently suppressing the sidelobe interference.Simulation results validate that the algorithm has the ability to suppress both mainlobe and sidelobe interference without compromising the angle measurement performance.

关 键 词：主副瓣干扰 特征投影预处理 自适应波束形成 主瓣保形 

分 类 号：TN911.7[电子电信—通信与信息系统]