Open AccessDOA Estimation for Coherent Signals Based on Modified Matrix Reconstruction
Author(s) -
Wei Zhang,
Yujun Han
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/569/4/042049
Subject(s) - toeplitz matrix , hermitian matrix , covariance matrix , smoothing , matrix (chemical analysis) , algorithm , mathematics , subspace topology , estimation of covariance matrices , mathematical optimization , computer science , statistics , mathematical analysis , pure mathematics , materials science , composite material
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.