DOA Estimation for Coherent Signals Based on Modified Matrix Reconstruction

2019 2nd International Conference on Advanced Materials, Intelligent Manufacturing and Automation

Zhang, Wei^1 ; Han, Yong^2

School of Electrical and Information Engineering, North Minzu University, Yinchuan, Ningxia

750021, China^1

School of Information Engineering, Harbin Institute of Technology at Weihai, Weihai, Shandong

264209, China^2

关键词: Coherent signals;    Direction of arrival estimation;    DOA estimation;    Forward-and-backward;    Hermitian matrices;    Incomplete information;    Subspace-based algorithms;    Toeplitz matrices;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/569/4/042049/pdf
DOI  :  10.1088/1757-899X/569/4/042049

来源: IOP

【 摘 要 】

In this paper, we propose a modified ESPRIT-like method for direction-of-arrival estimation of coherent signals. Any two rows of the output covariance matrix is adopted to reconstruct two Toeplitz matrices, after Hermitian transpositing and forward and backward smoothing, the equivalent data matrix is utilized for coherent signals DOA estimation combined subspace-based algorithm. The presented method solves the problem that the equivalent covariance matrix of ESPRIT-like method is not Hermitian matrix, which leads to the incomplete information utilization. The simulation results show the effectiveness of the proposed method.