一种弹载相控阵雷达及其极化滤波方法  

Phased array radar on missiles and its polarization filtering method

作　　者：宋立众[1] 乔晓林[1] 吴群[1] 

机构地区：[1]哈尔滨工业大学电子科学与技术博士后科研流动站,黑龙江哈尔滨150001

出　　处：《电波科学学报》2009年第6期1071-1077,共7页Chinese Journal of Radio Science

基　　金：中国博士后科学基金资助项目(20070420856)

摘　　要：提出了一种弹载极化相控阵制导雷达及其极化滤波方法。该雷达发射单极化线性调频脉冲压缩信号,以提高其低截获概率性能;采用正交极化通道同时接收回波信号,获取雷达回波的全极化信息;对脉冲压缩后的高距离分辨信号,利用瞬态极化估值、极化变换和极化矢量滤波运算级联的方法,实现对干扰的有效抑制。该方法的优点在于它可以抑制与目标处于同一个距离单元和角度单元的干扰信号,解决对单脉冲雷达角欺骗干扰的抑制难题。理论分析和仿真结果表明了该极化滤波抗干扰方法的有效性,研究结果对实际雷达系统的研制具有指导意义。This paper proposes a kind of polarization phased array guidance radar on the missile and its polarization filtering method. For the proposed radar, the linear frequency modulation （LFM） pulse compression signal with single polarization is used as the transmitted signal and the performance of the low probability of intercept （LPI） is improved. The radar echo signal is received simultaneously through two orthogonal polarization channels and the polarization information of the echo signal can be obtained. For the high range resolution signal after pulse compression, the integration method of instantaneous polarization estimation, polarizationvector translation and polarization vector filtering is adopted to suppress the interference. The advantage of this method is that it can suppress the interference which is in the same range and space angle resolution cell, and solve the hard problem of suppression of angle deception interference. The validity of interference suppression method through polarization filtering are indicated through theoretical analysis and simulation. The research results have guidance significance for developing the practical radar systems on missiles.

关 键 词：相控阵雷达 制导雷达 干扰抑制 极化滤波 

分 类 号：TN974[电子电信—信号与信息处理]