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Article

Spatial Spectral Enhancement of Broadband Signals in a Towed Array Using Deconvolved Subband Peak Energy Detection

by 1,2,3,4,5, 1,2,3, 1,2,3,*, 1,2,3 and 1,2,3
1
Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China
2
Key Laboratory of Marine Information Acquisition and Security, Harbin Engineering University, Ministry of Industry and Information Technology, Harbin 150001, China
3
College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China
4
National Key Laboratory of Science and Technology on Underwater Acoustic Antagonizing, China State Shipbuilding Corporation Systems Engineering Research Institute, Beijing 100036, China
5
College of Information Science and Technology, Tibet University, Lhasa 850000, China
*
Author to whom correspondence should be addressed.
Academic Editors: Fangqing Wen, Jin He, Veerendra Dakulagi and Wei Liu
Remote Sens. 2022, 14(13), 3008; https://doi.org/10.3390/rs14133008
Received: 12 May 2022 / Revised: 6 June 2022 / Accepted: 20 June 2022 / Published: 23 June 2022
Conventional energy detection is a robust method that is usually applied to underwater broadband acoustic signal processing for towed arrays. Due to its low resolution, the weak target detection performance of conventional energy detection is severely degraded in shallow sea environments with strong acoustical reverberation. Subband peak energy detection is an effective method to improve the display resolution of conventional energy detection. However, subband peak energy detection produces false alarms due to the presence of high sidelobe levels. In order to improve the underwater target detection performance, a deconvolved subband peak energy detection method for towed arrays is proposed in this paper. Compared with conventional beamforming, minimum-variance distortionless response with forward–backward averaging and diagonal loading algorithm and subband peak energy detection, the proposed method could robustly provide higher-resolution results and suppress the fake peaks induced by subband peak energy detection. The performance of the proposed method was evaluated with simulation results, and the sea experimental data processing results show that the proposed method is effective in engineering applications. View Full-Text
Keywords: deconvolution; subband peak energy; high resolution; low signal-to-noise ratio environment deconvolution; subband peak energy; high resolution; low signal-to-noise ratio environment
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MDPI and ACS Style

Zhao, A.; Wang, K.; Hui, J.; Zeng, C.; Tang, K. Spatial Spectral Enhancement of Broadband Signals in a Towed Array Using Deconvolved Subband Peak Energy Detection. Remote Sens. 2022, 14, 3008. https://doi.org/10.3390/rs14133008

AMA Style

Zhao A, Wang K, Hui J, Zeng C, Tang K. Spatial Spectral Enhancement of Broadband Signals in a Towed Array Using Deconvolved Subband Peak Energy Detection. Remote Sensing. 2022; 14(13):3008. https://doi.org/10.3390/rs14133008

Chicago/Turabian Style

Zhao, Anbang, Keren Wang, Juan Hui, Caigao Zeng, and Kaiyu Tang. 2022. "Spatial Spectral Enhancement of Broadband Signals in a Towed Array Using Deconvolved Subband Peak Energy Detection" Remote Sensing 14, no. 13: 3008. https://doi.org/10.3390/rs14133008

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