Volume 37, Number 5, October 2019
|Page(s)||857 - 864|
|Published online||14 January 2020|
Joint DOD and DOA Estimation Using Reduced-Capon Method in Bistatic MIMO Array
基于降维 Capon 的双基地 MIMO 阵列目标 DOD 和 DOA 联合估计算法
School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
In order to resolve the problem of joint direction of departure (DOD) and direction of arrival (DOA) estimation in bistatic MIMO array, a dimensional reduced-Capon method based on Taylor series expansion and signal subspace is proposed in this paper. Firstly, the Taylor series expansion of the steering vector is used to reduce the two-dimensional (2D) spectrum peak searching of Capon method to one-dimensional searching. Then, the DOD estimator can be achieved via Lagrange multiplier by one-dimension search. Finally, the steering vector of DOA corresponding to the DOD estimator is achieved and the DOA can be estimated. Hence, the estimated DOD and DOA are obtained automatically paired. And also, the proposed method can avoid the high computational complexity of MIMO Capon method. Simulation results are presented to illustrate the effectiveness of the proposed method.
Key words: bistatic MIMO array / direction of departure (DOD) / direction of arrival (DOA) / Taylor series expansion / Capon / joint estimation / dimension reduction / simulation
关键字 : 双基地多输入多输出(MIMO)阵列 / 发射角(DOD) / 接收角(DOA) / 泰勒级数展开 / Capon
© 2019 Journal of Northwestern Polytechnical University. All rights reserved.
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