Spatially Smoothed Tensor-Based Method for Bistatic Co-Prime MIMO Radar With Hole-Free Sum-Difference Co-Array

被引：20
作者：
Lai, Xin [1 ,2 ]
Zhang, Xiaofei [1 ,2 ]
Zheng, Wang [1 ,3 ]
Ma, Penghui [1 ,2 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Elect & Informat Engn, Nanjing 210016, Peoples R China
[2] Nanjing Univ Aeronaut & Astronaut, Minist Ind & Informat Technol, Key Lab Dynam Cognit Syst Electromagnet Spectrum, Nanjing 211106, Peoples R China
[3] Purple Mt Labs, Nanjing 210016, Peoples R China
来源：
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2022年 / 71卷 / 04期
关键词：
Sensors; Sensor arrays; MIMO radar; Estimation; Radar; Direction-of-arrival estimation; Array signal processing; Co-prime array; bistatic MIMO radar; sum-difference co-array; DoD and DoA estimation; Cramer-Rao Bound; spatial smoothing; DOA ESTIMATION; COPRIME ARRAY; NESTED ARRAYS; JOINT DOD; DIRECTION; ARRIVAL; DESIGN; DIVERSITY; MODELS; ESPRIT;
D O I：
10.1109/TVT.2022.3144680
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we investigate the problem of joint direction of departure (DoD) and direction of arrival (DoA) estimation with bistatic MIMO radar. Specifically, a weaved co-prime array (WCA) bistatic MIMO (WCA-bMIMO) radar is proposed to produce a hole-free sum-difference co-array, which enables to offer significantly increased degrees of freedom (DoFs) and enlarged array aperture. Moreover, the two-dimensional spatial smoothing method is introduced to construct a smoothed received signal, which helps to tackle the rank deduction problem rooted in the equivalent one-snapshot received signal from the sum-difference co-array. Subsequently, the joint DoD and DoA estimates can be obtained by extracting the three-way tensor model. Furthermore, co-array Cramer-Rao Bound (CRB) for the bistatic co-prime MIMO radar is provided. Finally, the superiorities of the proposed bistatic co-prime MIMO radar in accuracy and resolution are proved by numerical simulation results.
引用
收藏
页码：3889 / 3899
页数：11
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