MULTI-INVARIANCE ESPRIT-LIKE ALGORITHMS FOR COHERENT DOA ESTIMATION  

作　　者：Zhang Xiaofei Xu Dazhuan 

机构地区：[1]Department of Electronic Engineering, Nanjing University of Aeronautics ＆ Astronautics, Nanjing 210016, China

出　　处：《Journal of Electronics(China)》2010年第1期24-28,共5页电子科学学刊（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No.60801052);Aeronautical Science Foundation of China (No.2008ZC52026,2009ZC52036)

摘　　要：Estimation of Signal Parameters via Rotational Invariance Technique(ESPRIT) algorithm can estimate Direction-Of-Arrival(DOA) of coherent signal,but its performance can not reach full satisfaction.We reconstruct the received signal to form data model with multi-invariance property,and multi-invariance ESPRIT algorithm for coherent DOA estimation is proposed in this paper.The proposed algorithm can resolve the DOAs of coherent signals and performs better in DOA estimation than that of ESPRIT-like algorithm.Meanwhile,it identifies more DOAs than ESPRIT-like algorithm.The simulation results demonstrate its validity.Estimation of Signal Parameters via Rotational Invariance Technique （ESPRIT） algorithm can estimate Direction-Of-Arrival （DOA） of coherent signal, but its performance can not reach full satisfaction. We reconstruct the received signal to form data model with multi-invariance property, and multi-invariance ESPRIT algorithm for coherent DOA estimation is proposed in this paper. The proposed algorithm can resolve the DOAs of coherent signals and performs better in DOA estimation than that of ESPRIT-like algorithm. Meanwhile, it identifies more DOAs than ESPRIT-like algorithm. The simulation results demonstrate its validity.

关 键 词：Coherent signals Direction-Of-Arrival(DOA) estimation Multi-invariance Estimation of Signal Parameters via Rotational Invariance Technique(ESPRIT) 

分 类 号：TN911.7[电子电信—通信与信息系统]