Central Angle Estimation of Distributed Targets with Electric Vector Sensors in MIMO Radar

Wei WANG  Ben WANG  Xiangpeng WANG  Ping HUANG  

Publication
IEICE TRANSACTIONS on Communications   Vol.E98-B   No.10   pp.2060-2067
Publication Date: 2015/10/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E98.B.2060
Type of Manuscript: PAPER
Category: Antennas and Propagation
Keyword: 
electronic vector sensor,  coherently distributed targets,  MIMO radar,  angle estimation,  

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Summary: 
In this paper, a novel approach for central angle estimation of coherently distributed targets that utilizes electric vector sensors in bistatic MIMO radar is proposed. First, the coherently distributed targets signal model in bistatic MIMO radar that equipped with electric vector sensors is reconstructed. The Hadamard product rotation invariance property of the coherently distributed targets' steering vectors is found to get the initial estimation of direction of departure (DOD). 1-D MUSIC is then used to estimate the accurate central angles of direction of arrival (DOA) and DOD. The proposed method can estimate the central angles of DOA and DOD efficiently and accurately without pairing even in the situation where the angular signal distribution functions are unknown. Our method has better performance than Guo's algorithm. Numerical results verify the improvement and performance of the proposed algorithm.