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.
出处
《电波科学学报》
EI
CSCD
北大核心
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)
