Tensor-Based Angle Estimation Approach for Strictly Noncircular Sources with Unknown Mutual Coupling in Bistatic MIMO Radar

Abstract

In the paper, the estimation of joint direction-of-departure (DOD) and direction-of-arrival (DOA) for strictly noncircular targets in multiple-input multiple-output (MIMO) radar with unknown mutual coupling is considered, and a tensor-based angle estimation method is proposed. In the proposed method, making use of the banded symmetric Toeplitz structure of the mutual coupling matrix, the influence of the unknown mutual coupling is removed in the tensor domain. Then, a special enhancement tensor is formulated to capture both the noncircularity and inherent multidimensional structure of strictly noncircular signals. After that, the higher-order singular value decomposition (HOSVD) technology is applied for estimating the tensor-based signal subspace. Finally, the direction-of-departure (DOD) and direction-of-arrival (DOA) estimation is obtained by utilizing the rotational invariance technique. Due to the use of both noncircularity and multidimensional structure of the detected signal, the algorithm in this paper has better angle estimation performance than other subspace-based algorithms. The experiment results verify that the method proposed has better angle estimation performance.

Tensor-Based Target Parameter Estimation Algorithm for FDA-MIMO Radar with Array Gain-Phase Error

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Semi-blind joint symbols and multipath parameters estimation of MIMO systems using KRST/MKRSM coding

“…Since the pioneering works [17] [18] of Schmidt (1986) and Roy and Kailath (1989) who introduced the popular subspacebased methods called MUSIC (multiple signal classification) and ESPRIT (estimation of signal parameters via rotational invariance technique), a lot of MUSIC-based and ESPRITbased algorithms have been developed to solve the DoD and DoA estimation problem. In recent years, tensor-based methods have been proposed for joint DoD and DoA estimation in the context of bistatic MIMO radar [19], [20], [21], [22], [23], [24], [25], [26]. Several tensorbased angle estimation methods have also been developed for multipath MIMO wireless communication systems as in [27], [28], [29].…”

Joint Angle and Frequency Estimation Using One-Bit Measurements

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