DOA Estimation for Coherent Signals Based on Modified Matrix Reconstruction
Wei Zhang, Yong Han · IOP Conference Series Materials Science and Engineering · 2019
Abstract 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.