Direction finding and mutual coupling estimation for bistatic MIMO radar

Authors:
Xiaoli Liu;Guisheng Liao
Affiliations:
College of Communication Engineering, Hangzhou Dianzi University, Hangzhou, Zhejiang 310018, China and National Lab of Radar Signal Processing, Xidian University, Xi'an, Shaanxi 710071, China;National Lab of Radar Signal Processing, Xidian University, Xi'an, Shaanxi 710071, China
Venue:
Signal Processing
Year:
2012

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Abstract

An algorithm for joint direction-of-departure (DOD) and direction-of-arrival (DOA) estimation in the presence of unknown mutual coupling for bistatic MIMO radar is presented. Based on the special structure of the coupling matrix of uniform linear array (ULA), the angles can be estimated directly by two one-dimensional searches without the knowledge of the mutual coupling matrices. Then the mutual coupling coefficients of the transmitter and the receiver can be solved in closed-form by utilizing the obtained DODs and DOAs, respectively. Numerical examples are given for demonstrating the effectiveness of the proposed method.