双基地机载雷达杂波预滤波方法  

Clutter pre-filtered method applied in bistatic airborne radar

作　　者：周延[1] 冯大政[1] 朱国辉[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071

出　　处：《西安电子科技大学学报》2015年第5期68-74,共7页Journal of Xidian University

基　　金：国家自然科学基金资助项目(61271293)

摘　　要：针对双基地机载雷达空时自适应处理难以有效抑制杂波检测目标的问题,提出了一种双基地机载雷达杂波预滤波方法.该方法考虑了实际中载机速度的估计与真实速度的误差,利用雷达系统参数、载机平台速度等信息设计杂波预滤波器抑制大部分杂波,剩余的少量杂波可由发展成熟的空时自适应处理算法进行抑制,进而提高空时自适应处理算法的动目标检测能力.计算机仿真实验表明,该方法能有效地对几种典型几何配置下的双基地机载雷达杂波进行抑制,降低了杂波自由度,后续级联进一步改善了空时自适应处理算法的动目标检测性能.In order to solving the problem of ineffective clutter suppression and target detection of spacetime adaptive processing（STAP）in bistatic airborne radar,a clutter pre-filtering method applied in the bistatic airborne radar that takes advantage of radar operating parameters,platform velocity and so on is proposed.The velocity error of the airborne platform is also considered.Most of the clutter can be filtered so that the residual clutter can be completely suppressed by the well-developed STAP algorithm.Computer simulation results show that this method is effectively workable to several classical geometric configurations of bistatic airborne radar.The moving target detectability of the following STAP algorithm is also enhanced after this pre-filter.

关 键 词：双基地机载雷达 空时自适应处理 降维 杂波抑制 

分 类 号：TN957.51[电子电信—信号与信息处理]