Total variation constrained deconvolved conventional beamforming algorithm for azimuthal spectral estimation

YANG Zehui; NIE Weihang; CHENG Gaofeng; WU Yaozhen; XU Ji; ZHAO Qingwei; YAN Yonghong

doi:10.12395/0371-0025.2023173

Volume 50 Issue 1

Jan. 2025

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ACTA ACUSTICA > 2025 > 50(1): 68-76. > DOI: 10.12395/0371-0025.2023173 CSTR: 32049.14.11-2065.2023173

YANG Zehui, NIE Weihang, CHENG Gaofeng, WU Yaozhen, XU Ji, ZHAO Qingwei, YAN Yonghong. Total variation constrained deconvolved conventional beamforming algorithm for azimuthal spectral estimation[J]. ACTA ACUSTICA, 2025, 50(1): 68-76. DOI: 10.12395/0371-0025.2023173

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Total variation constrained deconvolved conventional beamforming algorithm for azimuthal spectral estimation

YANG Zehui^{1, 2,},
NIE Weihang^{1, 2},
CHENG Gaofeng¹,
WU Yaozhen³,
XU Ji^{1, 2},
ZHAO Qingwei^{1, 2, ,},
YAN Yonghong^{1, 2}

1.
Speech and Intelligent Information Processing Laboratory, Institute of Acoustics, Chinese Academy of Sciences　Beijing　100190
2.
University of Chinese Academy of Sciences　Beijing　100049
3.
Troops 91001, PLA　Beijing　100084

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PACS:
- 43.30 (Underwater sound)
- 43.60 (Acoustic signal processing)
Received Date: August 15, 2023
Revised Date: October 27, 2023

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Abstract

Abstract

In order to enhance the stability of the deconvolved conventional beamforming (D-CBF) algorithm, reduce background noise levels in the azimuth spectrum, and improve processing gain, a total variation constrained deconvolved CBF (TVD-CBF) spatial spectrum estimation algorithm is proposed. The approach leverages the sparse prior of the source distribution by incorporating a total variation regularization term as a nonlinear constraint within the cost function. Consequently, spatial resolution is improved while the accumulation of noise and errors is suppressed, thereby enhancing solution stability. Simulation results demonstrate that the TVD-CBF algorithm significantly outperforms the D-CBF algorithm in terms of azimuthal directivity and resolution, exhibiting surperior performance in direction of arrival estimation. The effectiveness of the TVD-CBF algorithm is further validated through experiments on sea trial data.
- Azimuthal spectral estimation,
- Direction of arrival estimation,
- Conventional beamforming,
- Deconvolution,
- Total variation

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