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Coherent Signal DOA Estimation Using Eigenvector Associated with Max Eigenvalue
Rui LI Ruqi XIAO Hong GU Weimin SU
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2021/07/01
Online ISSN: 1745-1337
Type of Manuscript: PAPER
Category: Digital Signal Processing
coherent signal, DOA estimation, Toeplitz matrix, eigenvector,
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A novel direction of arrival (DOA) estimation method for the coherent signal is presented in this paper. The proposed method applies the eigenvector associated with max eigenvalue, which contains the DOAs of all signals, to form a Toeplitz matrix, yielding an unconstrained optimization problem. Then, the DOA is obtained by peak searching of the pseudo power spectrum without the knowledge of signal number. It is illustrated that the method has a great performance and low computation complexity for the coherent signal. Simulation results verify the usefulness of the method.