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Citation:
　Xueli Sheng,Dian Lu,Yang Yu,et al.A Robust Focused-and-Deconvolved Conventional Beamforming for a Uniform Linear Array[J].Journal of Marine Science and Application,2024,(2):425-433.[doi:10.1007/s11804-024-00425-2]
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A Robust Focused-and-Deconvolved Conventional Beamforming for a Uniform Linear Array

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Title:
A Robust Focused-and-Deconvolved Conventional Beamforming for a Uniform Linear Array
Author(s):
Xueli Sheng1; 2; 3;  Dian Lu1; 2; 3;  Yang Yu1; 2; 3;  Chenyang Cai1; 2; 3
Affilations:
Author(s):
Xueli Sheng1; 2; 3;  Dian Lu1; 2; 3;  Yang Yu1; 2; 3;  Chenyang Cai1; 2; 3
1 National Key Laboratory of Underwater Acoustic Technology, Harbin Engineering University, Harbin 150001, China;
2 Key Laboratory for Polar Acoustics and Application of Ministry of Education (Harbin Engineering University), Ministry of Education, Harbin 150001, China;
3 College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China
Keywords:
Wideband|Beamforming|Focusing transform|Deconvolution|High resolution|Robust
分类号:
-
DOI:
10.1007/s11804-024-00425-2
Abstract:
In the field of array signal processing, uniform linear arrays (ULAs) are widely used to detect/separate a weak target and estimate its direction of arrival from interference and noise. Conventional beamforming (CBF) is robust but restricted by a wide mainlobe and high sidelobe level. Covariance-matrix-inversed beamforming techniques, such as the minimum variance distortionless response and multiple signal classification, are sensitive to signal mismatch and data snapshots and exhibit high-resolution performance because of the narrow mainlobe and low sidelobe level. Therefore, compared with the wideband CBF, this study proposes a robust focused-and-deconvolved conventional beamforming (RFDCBF), utilizing the Richardson-Lucy (R-L) iterative algorithm to deconvolve the focused conventional beam power of a half-wavelength spaced ULA. Then, the focused-and-deconvolved beam power achieves a narrower mainlobe and lower sidelobe level while retaining the robustness of wideband CBF. Moreover, compared with the wideband CBF, RFD-CBF can obtain a higher output signal-to-noise ratio (SNR). Finally, the performance of RFD-CBF is evaluated through numerical simulation and verified by sea trial data processing.

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Memo

Memo:
Received date: 2023-06-19;Accepted date: 2023-09-19。
Corresponding author: Xueli Sheng,E-mail:shengxueli@hrbeu.edu.cn
Last Update: 2024-05-28