Enhanced angle estimation in MIMO radar: Combine RD-MUSIC and SDP optimization

Ahmad, Mushtaq; Zhang, Xiaofei; Lai, Xin; Ali, Farman; Shi, Xinlei

doi:10.1016/j.aeue.2024.155235

AEU - International Journal of Electronics and Communications

2024

DOI: 10.1016/j.aeue.2024.155235

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Enhanced angle estimation in MIMO radar: Combine RD-MUSIC and SDP optimization

Mushtaq Ahmad,

Xiaofei Zhang,

Xin Lai

et al.

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Low-Complexity 2D-DOD and 2D-DOA Estimation in Bistatic MIMO Radar Systems: A Reduced-Dimension MUSIC Algorithm Approach

Ahmad,

Zhang,

Lai

et al. 2024

Sensors

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This paper presents a new technique for estimating the two-dimensional direction of departure (2D-DOD) and direction of arrival (2D-DOA) in bistatic uniform planar array Multiple-Input Multiple-Output (MIMO) radar systems. The method is based on the reduced-dimension (RD) MUSIC algorithm, aiming to achieve improved precision and computational efficiency. Primarily, this pioneering approach efficiently transforms the four-dimensional (4D) estimation problem into two-dimensional (2D) searches, thus reducing the computational complexity typically associated with conventional MUSIC algorithms. Then, exploits the spatial diversity of array response vectors to construct a 4D spatial spectrum function, which is crucial in resolving the complex angular parameters of multiple simultaneous targets. Finally, the objective is to simplify the spatial spectrum to a 2D search within a 4D measurement space to achieve an optimal balance between efficiency and accuracy. Simulation results validate the effectiveness of our proposed algorithm compared to several existing approaches, demonstrating its robustness in accurately estimating 2D-DOD and 2D-DOA across various scenarios. The proposed technique shows significant computational savings and high-resolution estimations and maintains high precision, setting a new benchmark for future explorations in the field.

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Low-Complexity 2D-DOD and 2D-DOA Estimation in Bistatic MIMO Radar Systems: A Reduced-Dimension MUSIC Algorithm Approach

Ahmad,

Zhang,

Lai

et al. 2024

Sensors

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show abstract

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Enhanced angle estimation in MIMO radar: Combine RD-MUSIC and SDP optimization

Cited by 1 publication

References 35 publications

Low-Complexity 2D-DOD and 2D-DOA Estimation in Bistatic MIMO Radar Systems: A Reduced-Dimension MUSIC Algorithm Approach

Low-Complexity 2D-DOD and 2D-DOA Estimation in Bistatic MIMO Radar Systems: A Reduced-Dimension MUSIC Algorithm Approach

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