期刊
IEEE COMMUNICATIONS LETTERS
卷 25, 期 7, 页码 2231-2234出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2021.3072310
关键词
Direction finding; multiple-input multiple-output radar; mutual coupling; Lagrange multiplier
资金
- National Natural science foundation of China [61701046, 62071476]
This letter investigates target localization and sensor calibration in bistatic MIMO radar in the presence of direction-dependent mutual coupling, proposing a MUSIC-like methodology that links angle estimation to a quadratic optimization problem solved via Lagrange multiplier method. The proposed method is suitable for arbitrary sensor geometry, with numerical simulations validating its effectiveness.
Mutual coupling (MC) effect exists extensively in sensor array, and it will adversely affect the direction finding in multiple-input multiple-output (MIMO) radar. In the previous works, the MC effects in MIMO radar are always modeled with direction-independent MC matrices, which may not be guaranteed in practice. In this letter, we investigate into the issue of target localization and sensor calibration in bistatic MIMO radar in the presence of direction-dependent MC. A multiple signal classification (MUSIC)-like methodology is proposed. It links angle estimation to a quadratic optimization problem, which is solved via Lagrange multiplier method. The proposed method is suitable for arbitrary sensor geometry. Numerical simulations are provided to validate the effectiveness of the proposed method.
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