Low-complexity 2D coherently distributed sources decoupled DOAs estimation method  

作　　者：GUO XianSheng WAN Qun YANG WanLin LEI XueMei 

机构地区：[1]Department of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China

出　　处：《Science in China(Series F)》2009年第5期835-842,共8页中国科学（F辑英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 60772146);the Program for New Century Excellent Talents in University (Grant No. NCET-05-0806)

摘　　要：The existing directions-of-arrival （DOAs） estimation methods for two-dimensional （2D） coherently distributed sources need one- or two-dimensional search, and the computational complexities of them are high. In addition, most of them are designed for special angular signal distribution functions. As a result, their performances will degenerate when deal with different sources with different angular signal distribution functions or unknown angular signal distribution functions. In this paper, a low-complexity decoupled DOAs estimation method without searching using two parallel uniform linear arrays （ULAs） is proposed for coherently distributed sources, as well as a novel parameter matching method. It can resolve the problems mentioned above efficiently. Simulation results validate the effectiveness of our approach.The existing directions-of-arrival （DOAs） estimation methods for two-dimensional （2D） coherently distributed sources need one- or two-dimensional search, and the computational complexities of them are high. In addition, most of them are designed for special angular signal distribution functions. As a result, their performances will degenerate when deal with different sources with different angular signal distribution functions or unknown angular signal distribution functions. In this paper, a low-complexity decoupled DOAs estimation method without searching using two parallel uniform linear arrays （ULAs） is proposed for coherently distributed sources, as well as a novel parameter matching method. It can resolve the problems mentioned above efficiently. Simulation results validate the effectiveness of our approach.

关 键 词：2D coherently distributed source uniform linear array direction-of-arrival （DOA） decoupled estimation quadric rotational invariance property （QRIP） 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程] X831[自动化与计算机技术—控制科学与工程]