基于信号相位匹配的相干源高分辨方位估计算法  

A Better High-Resolution Algorithm for Direction Estimation of Coherent Sources

作　　者：张小蓟[1] 张歆[1] 朱维杰[1] 孙进才[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《西北工业大学学报》2003年第6期740-743,共4页Journal of Northwestern Polytechnical University

基　　金：国家自然科学基金 ( 6 0 2 72 0 77);航空科学基金( 0 2 F5 30 30 );陕西省自然科学基金 ( 2 0 0 2 F17)

摘　　要：介绍了信号相位匹配的基本原理 ,给出了利用该原理进行高分辨方位估计的算法 ,以及不同情况下算法仿真的结果。仿真结果表明这种方位估计算法具有指向性尖锐、无旁瓣的特点 。In radar and sonar data processing, high resolution direction estimation of coherent sources is important but, to our best knowledge, the price paid for obtaining it is, up to now, quite high. Starting from our previous paper , we extended it to develop a better high resolution algorithm presented in this paper. We extended the algorithm in Ref.2 to develop what we call SPM (signal phase match) algorithm. Section 1 explains in some detail the principles of SPM algorithm for obtaining high resolution direction estimation of coherent sources. On the basis of what is explained in section 1, we like to point out the advantages of SPM algorithm: (1) it can give a very sharp directivity and a very low side lobe; (2) it can distinguish between coherent sources with direction difference as small as about 1°. Simulation results of a numerical example, as shown in Figs.4,5, and 6, and Table 1, confirm preliminarily the two advantages of SPM algorithm proposed by us.

关 键 词：信号相位匹配 相干源 高分辨方位估计算法 

分 类 号：TN911.7[电子电信—通信与信息系统]