线阵中基于降维NC-MUSIC的非圆信号DOA估计算法  

Reduced-Dimension NC-MUSIC Algorithm for DOA Estimation of Noncircular Signals in Linear Array

作　　者：孙华普 郑旺[1] 吕卫华[2] 张小飞[1,2] 

机构地区：[1]江苏省物联网与控制技术重点实验室(南京航空航天大学),南京210016 [2]南京航空航天大学电子信息工程学院,南京210016

出　　处：《航空兵器》2016年第4期36-41,共6页Aero Weaponry

基　　金：国家自然科学基金项目(61371169)

摘　　要：通信领域中非圆(NC)信号的波达方向(DOA)估计已经得到广泛的研究和应用。考虑到非圆信号的多重信号分类算法(MUSIC)计算复杂度较高,提出线阵中基于降维NC-MUSIC的非圆信号DOA估计算法。与传统的需要二维搜索的2D-NC-MUSIC算法相比,该算法只需要一维搜索,降低了计算复杂度。仿真结果表明,该算法优于传统的MUSIC算法,并且与2D-NCMUSIC算法的估计性能非常接近。Direction of arrival（ DOA） estimation for noncircular（ NC） signals has been widely studied and used in communications. Considering the high computational complexity of NC multiple signal classification（ MUSIC） algorithm,reduced-dimension NC-MUSIC algorithm is proposed for DOA estimation of NC signals. Compared with conventional 2D-NC-MUSIC algorithm which needs two-dimension search,the proposed algorithm only requires one-dimension search,which reduces the computational complexity. Simulation results illustrate that the proposed algorithm outperforms the conventional MUSIC algorithm and has close estimation performance to the 2D-NC-MUSIC algorithm.

关 键 词：线性阵列 非圆信号 MUSIC DOA估计 

分 类 号：TN911.7[电子电信—通信与信息系统]