分布式阵列雷达波束-极化域联合主瓣干扰抑制方法  

Beamspace-polarization Domain Main-lobe Jamming Suppression Method for Distributed Array Radar

作　　者：韩博文 兰天 杨小鹏[3] HAN Bowen;LAN Tian;YANG Xiaopeng(School of Information and Electronics,Beijing Institute of Technology,Beijing 100081,China;b.Beijing Institute of Technology Chongqing In novation Center,Chongqing 401120,China;Yangtze Delta Region Academy of Beijing Institute of Technology,Jiaxing 314019,China)

机构地区：[1]北京理工大学信息与电子学院,北京100081 [2]北京理工大学重庆创新中心,重庆401120 [3]北京理工大学长三角研究院(嘉兴),浙江嘉兴314019

出　　处：《现代雷达》2021年第10期21-26,共6页Modern Radar

基　　金：国家自然科学基金资助项目(6160206012);重庆市自然科学基金资助项目(cstc202jcyj-msxmx0768)。

摘　　要：分布式阵列雷达可以形成等效大口径,具有空域高分辨特性,但主瓣干扰会对其性能造成严重影响。针对这一问题,提出一种适用于分布式主-辅联合阵列雷达的波束-极化域联合主瓣干扰抑制方法。首先,利用分布式主阵列与辅助阵列极化特性构造空-极化导向矢量;然后,根据预估角度构造目标方向和干扰方向极化正交波束;最后,利用正交波束求取协方差矩阵,并结合空-极化导向矢量计算MSINR权值,进而对主瓣干扰进行抑制。通过计算机仿真对所提方法的有效性进行了验证。Distributed array radar can form equivalent large aperture and have high spatial resolution, but the mainlobe jamming will seriously affect its performance. To solve this problem, a beamspace-polarization domain mainlobe jamming suppression method for main-auxiliary joint distributed array radar is proposed in this paper. Firstly, the space-polarization steering vector is constructed by using the polarization characteristics of distributed main array and auxiliary array;According to the estimated jamming direction, the polarization orthogonal beams in the target direction and jamming direction are constructed;Finally, the covariance matrix is obtained by using the orthogonal beam, and the MSINR weight is calculated by using the space-polarization steering vector, so as to suppress the mainlobe jamming. The effectiveness of the proposed method is verified by computer simulation.

关 键 词：分布式阵列雷达 主瓣干扰抑制 波束域 极化域 自适应抗干扰 

分 类 号：TN973.3[电子电信—信号与信息处理]