摘要
针对主瓣、副瓣干扰同时存在的复杂干扰环境,本文提出一种基于干扰环境认知的抗干扰处理方法。首先通过干扰环境的认知得到主副干扰的情况;再根据副瓣干扰角度构建副瓣干扰子空间补,通过子空间投影实现主瓣保形的副瓣干扰抑制;对于剩余的主瓣干扰,构建多波束空间分集信号,通过基于JADE的盲源分离方法实现主瓣干扰的抑制。仿真处理结果表明该方法具有适应复杂干扰环境的良好性能。
When main-lobe and side-lobe of the radar were operated in complex electromagnetism fields,an anti-jamming processing based on cognitive method was proposed in this paper.Firstly,the spatial distribution of jamming was obtained through the analysis on jamming environment;then based on the side-lobe jamming condition,the complement subspace of side-lobe jamming was constructed,and by projecting in the subspace,the side-lobe jamming was suppressed while the shape of main-lobe was maintained.Next,for the remaining main-lobe jamming,multi-beams of space diversity signals were formed,and the signals were separated through Blind Source Separation with JADE.The simulation results verified that the proposed method had good adaptability under complex jamming environment.
作者
王金峰
郝慧军
WANG Jinfeng;HAO Huijun(No. 38 Research Institute of CETC, Hefei, 230088;Key Laboratory of Aperture Array and Space Application, Hefei 230088)
出处
《火控雷达技术》
2022年第2期42-47,共6页
Fire Control Radar Technology
关键词
主/副瓣干扰
认知
子空间补
盲源分离
main-lobe/side-lobe jamming
cognitive method
complement subspace
blind source separation
