Robust Angle Estimation for MIMO Radar with the Coexistence of Mutual Coupling and Colored Noise

被引:5
作者
Wang, Junxiang [1 ]
Wang, Xianpeng [2 ,3 ]
Xu, Dingjie [4 ]
Bi, Guoan [5 ]
机构
[1] Harbin Engn Univ, Coll Automat, Harbin 150001, Heilongjiang, Peoples R China
[2] Hainan Univ, State Key Lab Marine Resource Utilizat South Chin, Haikou 570228, Hainan, Peoples R China
[3] Hainan Univ, Coll Informat Sci & Technol, Haikou 570228, Hainan, Peoples R China
[4] Harbin Inst Technol Univ, Coll Elect Engn & Automat, Harbin 150001, Heilongjiang, Peoples R China
[5] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
来源
SENSORS | 2018年 / 18卷 / 03期
基金
中国国家自然科学基金;
关键词
MIMO radar; angle estimation; mutual coupling; spatial colored noise; HOSVD; DOA ESTIMATION; PROPAGATOR METHOD; SUBSPACE APPROACH; JOINT DOD; DIRECTION; ANTENNAS; ARRAYS;
D O I
10.3390/s18030832
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
This paper deals with joint estimation of direction-of-departure (DOD) and direction-of-arrival (DOA) in bistatic multiple-input multiple-output (MIMO) radar with the coexistence of unknown mutual coupling and spatial colored noise by developing a novel robust covariance tensor-based angle estimation method. In the proposed method, a third-order tensor is firstly formulated for capturing the multidimensional nature of the received data. Then taking advantage of the temporal uncorrelated characteristic of colored noise and the banded complex symmetric Toeplitz structure of the mutual coupling matrices, a novel fourth-order covariance tensor is constructed for eliminating the influence of both spatial colored noise and mutual coupling. After a robust signal subspace estimation is obtained by using the higher-order singular value decomposition (HOSVD) technique, the rotational invariance technique is applied to achieve the DODs and DOAs. Compared with the existing HOSVD-based subspace methods, the proposed method can provide superior angle estimation performance and automatically jointly perform the DODs and DOAs. Results from numerical experiments are presented to verify the effectiveness of the proposed method.
引用
收藏
页数:14
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