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Article Dans Une Revue IEEE Transactions on Aerospace and Electronic Systems Année : 2023

Enhanced BNC Approach for Non-Circular Signals Direction Finding with Sparse Array in the Scenario of Impulsive Noise

Résumé

Sparse array is popular in the field of array signal processing. However, in the direction of arrival (DOA) estimation, most research on sparse array assumes Gaussian noise, resulting in a model mismatch in the practical scenarios of impulsive noise. We investigate the estimation performance of the bounded nonlinear covariance (BNC) matrix-based methods, which can be used to replace the original data covariance matrix of the received signal and achieve good robustness to the impulsive interference. We propose an enhanced BNC (EBNC) matrix with a noncircular signal for a nested array in the scenario of impulsive noise. The proposed EBNC matrix can fight against the impulsive noise outliers and its boundedness and convergence are shown. The proposed method's performance is assessed with simulations. Simulation results indicate that the proposed method provides better performance in DOA estimation than the classical BNC, correntropy-based covariance matrix, and Gaussian covariance-based methods, especially in highly impulsive noise scenario.
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Dates et versions

hal-04241206 , version 1 (08-11-2023)

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Paternité - Pas d'utilisation commerciale

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Xudong Dong, Meng Sun, Jun Zhao, Xiaofei Zhang, Yide Wang. Enhanced BNC Approach for Non-Circular Signals Direction Finding with Sparse Array in the Scenario of Impulsive Noise. IEEE Transactions on Aerospace and Electronic Systems, 2023, 59 (5), pp.1-13. ⟨10.1109/TAES.2023.3275934⟩. ⟨hal-04241206⟩
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