Underdetermined Direction of Arrival Estimation for Coprime Array in the Presence of Nonuniform Noise

Bing SUN; Huailin RUAN; Chenxi WU; Hua ZHONG; Shilong WU

doi:10.11999/JEIT210027

Volume 43 Issue 12

Dec. 2021

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Bing SUN, Huailin RUAN, Chenxi WU, Hua ZHONG, Shilong WU. Underdetermined Direction of Arrival Estimation for Coprime Array in the Presence of Nonuniform Noise[J]. Journal of Electronics & Information Technology, 2021, 43(12): 3687-3694. doi: 10.11999/JEIT210027

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Bing SUN, Huailin RUAN, Chenxi WU, Hua ZHONG, Shilong WU. Underdetermined Direction of Arrival Estimation for Coprime Array in the Presence of Nonuniform Noise[J]. Journal of Electronics & Information Technology, 2021, 43(12): 3687-3694. doi: 10.11999/JEIT210027

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Underdetermined Direction of Arrival Estimation for Coprime Array in the Presence of Nonuniform Noise

doi: 10.11999/JEIT210027

College of Electronic Engineering, National University of Defense Technology, Hefei 230037, China

Funds: The National Natural Science Foundation of China (61171170), The Anhui Province Natural Science Foundation (1908085QF280)

Received Date: 2021-01-08
Rev Recd Date: 2021-03-30

Available Online: 2021-04-02

Publish Date: 2021-12-21

Abstract

Abstract

The underdetermined Direction Of Arrival (DOA) estimation method based on the coprime array will degrade in the presence of nonuniform noise. To address this problem, a robust DOA estimation method based on covariance matrix reconstruction and matrix completion is proposed in this paper. Firstly, the covariance matrix of the received data is decomposed to obtain a diagonal matrix containing non-uniform noise terms. Then, the minimum value of the diagonal matrix elements is selected to replace the remaining diagonal matrix elements to obtain the reconstructed data covariance matrix. Finally, based on the matrix completion theory, the reconstructed covariance matrix is extended and filled, and the subspace method is used for DOA estimation. Theoretical analysis and simulation results show that, compared with the existing methods, the proposed method suppresses effectively the influence of nonuniform noise and has better DOA estimation performance.
- Direction Of Arrival (DOA),
- Coprime array,
- Nonuniform noise

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References(23)

References

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