期刊
REMOTE SENSING
卷 14, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/rs14081917
关键词
low-angle tracking; MIMO radar; data fusion; beamspace processing; undulating reflecting surface; multipath signal
类别
资金
- Fund for Foreign Scholars in University Research and Teaching Programs (the 111 Project) [B18039]
This paper discusses the issue of low-angle estimation in MIMO radar and proposes a BSC algorithm to improve the performance. The algorithm solves initial angle estimation and multipath coefficient estimation using beamspace data, reduces data dimensions, and provides closed-form solutions for three multipath scenes. The method achieves high estimation accuracy while requiring few processing resources and demonstrates superior computational complexity for engineering applications.
This paper discusses the issue of low-angle estimation in multiple-input, multiple-output (MIMO) radar. Due to the low amount of data transmission, storage, and computation required for beamspace super-resolution algorithms in low-angle estimation, the method has gained considerable interest in recent years. This paper develops a beamspace scene classification (BSC) algorithm to enhance the performance of low-angle estimation in MIMO radar. The proposed BSC algorithm solves an initial angle estimate and the multipath coefficient estimate using the 3D beamspace data, and further constructs the beamspace data required for transmitting and receiving sides to reduce the data dimensions. It is additionally used to provide three estimation schemes with closed-form solutions for three multipath scenes (obtaining two estimations for transmitting and receiving sides). Finally, it fuses the estimates of the two sides by the minimum variance criterion. As a result, the proposed method achieves high estimation accuracy while requiring few processing resources. Moreover, the computational complexity of the proposed algorithm is examined in this study, with the results demonstrating that the proposed method is superior for engineering applications.
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