期刊
IEEE SIGNAL PROCESSING LETTERS
卷 28, 期 -, 页码 548-552出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LSP.2021.3061272
关键词
Coarray interpolation; coprime EMVS array; difference coarray; direction -of-arrival (DOA) estimation
资金
- National Key Research and Development Program of China [2019QY0705]
- Sichuan Science and Technology Program [2019YJ0191]
The proposed method achieves DOA estimation by filling in zero elements, recovering covariance matrices, and constructing a larger covariance matrix, with experimental results demonstrating its superiority over conventional methods.
In this letter, we develop a coarray interpolation method for direction-of-arrival (DOA) estimation using the coprime electromagnetic vector-sensor (EMVS) array. Firstly, we derive the coarray signal model of the coprime EMVS array, which can be viewed as a combination of multiple polarization components. Subsequently, we fill in zero elements in each polarization component and recover the corresponding low-rank covariance matrix by solving a nuclear norm minimization (NNM) problem. By exploiting the recovered covariance matrices, we eventually construct a larger covariance matrix to carry out DOA estimation. Numerical experiment results demonstrate the superiority of the proposed algorithm over conventional methods.
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