A Blind Direction of Arrival and Mutual Coupling Estimation Scheme for Nested Array
ID:131 View Protection:ATTENDEE Updated Time:2020-08-05 10:17:28 Hits:381 Oral Presentation

Start Time:2020-06-08 14:20(Asia/Shanghai)

Duration:20min

Session:S Special Session » SS16Sparse Array Configuration For Improved Spectrum Estimation And Its Applications

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Abstract
Generally, nested array (NA) is susceptible to mutual coupling due to the dense subarray, which seriously degrades the performance. To address this issue, we design an array switching-based scheme to achieve the blind direction of arrival (DOA) and mutual coupling estimation in this paper. Specifically, by exploiting the inherent sparse structural characteristics of NA, we first switch the sparse subarray on to perform initial DOA estimation, which enables to offer the well- performed estimates free from severe mutual coupling effect. Subsequently, the unambiguous angles are determined with low complexity by utilizing the received signal of the whole NA. Furthermore, the contaminated steering vector is reconstructed and a quadratic optimization problem is established to estimate the mutual coupling coefficients. Finally, the estimated mutual coupling matrix is used to re-estimate for refined parameter estimation. Numerical simulations demonstrate the effectiveness and superiority of the proposed scheme via array switching.
Keywords
nested array; direction of arrival; mutual coupling; array switching
Speaker
Jinqing Shen
Nanjing University of Aeronautics and Astronautics, China

Submission Author
Jinqing Shen Nanjing University of Aeronautics and Astronautics, China
Jianfeng Li Nanjing University of Aeronautics and Astronautics, China
Beizuo Zhu Nanjing University of Aeronautics and Astronautics, China
Changbo Ye Nanjing University of Aeronautics and Astronautics, China
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    Jun 08

    2020

    to

    Jun 11

    2020

  • Jan 12 2020

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  • Apr 15 2020

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  • Dec 31 2020

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