一种机载预警雷达改进JDL-STAP算法  

A modified JDL-STAP algorithm for airborne early-warning radar

作　　者：周云[1] 汪学刚[1] 段锐[1] 

机构地区：[1]电子科技大学电子工程学院,四川成都610054

出　　处：《电波科学学报》2010年第6期1052-1057,共6页Chinese Journal of Radio Science

基　　金：国防预研基金资助项目(No:9140A07030207DZ0203)

摘　　要：为了满足实际阵列天线处理要求和提高经典局域联合处理(JDL)STAP算法的稳健性,提出了一种基于信号表示过完备理论的改进JDL-STAP算法。该方法利用包含所有感兴趣观测角度形成的过完备基集合构造从空-时域到角度-多普勒域的变换矩阵,将空时数据精确映射到局域处理区域的角度-多普勒单元,再在低维空间内进行空时二维自适应处理。仿真结果表明:改进JDL算法比经典的DFT-JDL算法具有更优的性能和稳健性。In order to meet the requirements of physical array antenna processing and improve the robust of classical Joint-Domain Localized（JDL） STAP algo-rithms,the paper proposes a modified JDL-STAP algorithm based on the signal representation theory using overcomplete bases.The method first formulates the transforming matrix by employing an overcomplete basis set represented by all in-tended testing angles,then the space-time data are mapped into the angle-Doppler bins of localized processing region accurately,and last the space-time adaptive pro-cessing is implemented in the lower dimension subspace.The simulation results manifest that the performance of modified JDL algorithm is better than the classical DFT-JDL algorithm and is more robust than the latter.

关 键 词：机载预警雷达 STAP 局域联合处理 过完备基 杂波抑制 

分 类 号：TN95[电子电信—信号与信息处理]