单脉冲雷达的干扰对消和极化抑制技术  

Interference Cancellation and Polarization Suppression Technology Based on Monopulse Radar

作　　者：戴幻尧[1] 李永帧[1] 王雪松[1] 肖顺平[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《雷达科学与技术》2010年第5期431-437,共7页Radar Science and Technology

基　　金：国家自然科学基金重点项目(No.60736006);国家自然科学基金青年科学基金项目(No.60802078);总装预研项目(No.51309060305);湖南省研究生科研创新项目

摘　　要：建立了单脉冲跟踪雷达的和、差波束接收通道对目标和干扰信号的接收信号模型,考虑到旁瓣对消目标效应对测角误差的影响,指出利用和、差波束方向图特性的差异可以抑制目标效应,讨论了抑制和通道干扰的方法。基于和、差波束极化方向图的差异,提出了一种空域虚拟极化估计和极化滤波算法,给出了完整的解析表达式,结果表明该技术可对差通道干扰信号具有显著的极化抑制效果,提高信干比,可进一步提高干扰背景下的测角性能。The received signal of target and interference by monopulse radar sum and difference beam are founded.The auxiliary channel target effect on angle estimation in SLC system is considered.By using the pattern difference property between the sum and delta beam,the target effect can be neglected,the sum channel interference cancellation method is discussed.Then,by considering the polarization pattern differ-ence,a spatial virtual polarization estimation and polarization filter method is given.The full analytic expres-sion is given.The results indicate that it can suppress the jamming signal of sum and difference channel and improve SIR.It can be applied to enhance the angle measurement performance in the jamming background.

关 键 词：幅度和差波束 极化方向图 干扰对消 空域极化滤波 

分 类 号：TN958.4[电子电信—信号与信息处理]