A Self-calibration Algorithm for Mutual Coupling Based on Array Virtually Moving
Liao Yu-zhong · Microcomputer Information · 2009
The presence of mutual coupling between elements and coherent signals severely degrade the performance of DOA estimation.To solve it,a robust subspace-based DOA estimation algorithm that bases on the special structure of coupling matrix in the presence of array coupling is proposed for ULA(Uniform Linear Array) in this paper.The new algorithm provides a favorable DOA estimation and estimated performance without any knowledge of the array coupling.Because of only referring to the one-dimensional search,our algorithm has fewer calculating burdens.Finally,Representative computer simulation results are given to demonstrate the effectiveness and behavior of the proposed method.