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Open AccessArticle

Optimized Sonar Broadband Focused Beamforming Algorithm

by 1,2,*, 1 and 2
1
School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, Shanxi, China
2
School of Electronic Engineering, Xi’an Aeronautical University, Xi’an 710077, Shaanxi, China
*
Author to whom correspondence should be addressed.
Algorithms 2019, 12(2), 33; https://doi.org/10.3390/a12020033
Received: 27 November 2018 / Revised: 25 January 2019 / Accepted: 31 January 2019 / Published: 5 February 2019
Biases of initial direction estimation and focusing frequency selection affect the final focusing effect and may even cause algorithm failure in determining the focusing matrix in the coherent signal–subspace method. An optimized sonar broadband focused beamforming algorithm is proposed to address these defects. Initially, the robust Capon beamforming algorithm was used to correct the focusing matrix, and the broadband signals were then focused on the optimal focusing frequency by the corrected focusing matrix such that the wideband beamforming was transformed into a narrowband problem. Finally, the focused narrowband signals were beamformed by the second-order cone programming algorithm. Computer simulation results and water pool experiments verified that the proposed algorithm provides a good performance. View Full-Text
Keywords: broadband beamforming; coherent signal-subspace method; RCB algorithm; second-order cone programming broadband beamforming; coherent signal-subspace method; RCB algorithm; second-order cone programming
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MDPI and ACS Style

Bi, Y.; Feng, X.; Zhang, Y. Optimized Sonar Broadband Focused Beamforming Algorithm. Algorithms 2019, 12, 33. https://doi.org/10.3390/a12020033

AMA Style

Bi Y, Feng X, Zhang Y. Optimized Sonar Broadband Focused Beamforming Algorithm. Algorithms. 2019; 12(2):33. https://doi.org/10.3390/a12020033

Chicago/Turabian Style

Bi, Yang; Feng, Xi’an; Zhang, Yangmei. 2019. "Optimized Sonar Broadband Focused Beamforming Algorithm" Algorithms 12, no. 2: 33. https://doi.org/10.3390/a12020033

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