MIMO雷达子阵级m-Capon方法研究  

Study of subarray domain m-Capon method for MIMO radar

作　　者：李彩彩[1] 廖桂生[1] 朱圣棋[1] 晁淑媛[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：《系统工程与电子技术》2010年第6期1117-1120,共4页Systems Engineering and Electronics

基　　金：国家自然科学基金(60736009)资助课题

摘　　要：针对多输入多输出(multiple input multiple output,MIMO)雷达虚拟阵列孔径大,典型的降维空时自适应处理(space-time adaptive processing,STAP)方法——m-Capon法无法适用的问题,对子阵级m-Capon法进行了研究,并与相应的相控阵雷达3-Capon方法进行了比较。计算机仿真结果表明,处理器维数相同时,子阵级3-Capon方法性能明显提高,但非主杂波区误差鲁棒性差;子阵级1-Capon法在非主杂波区性能明显提高,但主杂波凹口太宽。在实际应用中,可综合运用两种方法对主杂波和非主杂波区分开处理,为工程实现提供可靠依据。As the multiple-input multiple-output（MIMO） radar has a large virtual aperture in spatial domain.Therefore,the conventional reduced-rank space-time adaptive processing（STAP）method,e.g.,the m-Capon method,is not practicable due to its large degree of freedom（DOF）.The sub-array domain m-Capon method is addressed.Computer simulation results show that the sub-array domain 3-Capon method has better performance compared with its counter part,the phased array radar,with the same processor DOF.However,it has insufficient robustness to the array error in side-lobe clutter section.The sub-array domain 1-Capon method has obviously better performance compared with the phased array radar in side-lobe clutter section.While its＇ main clutter null is too wide.In real applications,these two methods could be alternatively used in the main and side-lobe clutter sections,which can provide the solid theory for the engineering realization.

关 键 词：多输入多输出 空时自适应处理 m-Capon法 子阵合成 

分 类 号：TN957[电子电信—信号与信息处理]