Spatially smoothed tensor-based method for bistatic co-prime MIMO radar with hole-free sum-difference co-array

X Lai, X Zhang, W Zheng, P Ma - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
X Lai, X Zhang, W Zheng, P Ma
IEEE Transactions on Vehicular Technology, 2022ieeexplore.ieee.org
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 …
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.
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