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A Reverberation Suppression Method Based on the Joint Design of a PTFM Waveform and Receiver Filter

Transmitting waveform design and signal processing method optimization are effective ways to improve a sonar system’s detection performance. In this study, the spectrum and ambiguity function characteristics of pulse trains of frequency modulation (PTFM) signals were deduced and analyzed to address...

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Detalles Bibliográficos
Autores principales: Yue, Lei, Liang, Hong, Duan, Tong, Dai, Zezhou
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9777924/
https://www.ncbi.nlm.nih.gov/pubmed/36554112
http://dx.doi.org/10.3390/e24121707
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author Yue, Lei
Liang, Hong
Duan, Tong
Dai, Zezhou
author_facet Yue, Lei
Liang, Hong
Duan, Tong
Dai, Zezhou
author_sort Yue, Lei
collection PubMed
description Transmitting waveform design and signal processing method optimization are effective ways to improve a sonar system’s detection performance. In this study, the spectrum and ambiguity function characteristics of pulse trains of frequency modulation (PTFM) signals were deduced and analyzed to address the problem of serious reverberation interference in the detection of low-speed targets in shallow water environments. The action mechanisms of PTFM signal parameters on the comb spectrum and bed of nails ambiguity function were identified. PTFM signal parameters were designed according to reverberation suppression requirements. The threshold was calculated using the estimate-before-detect method, and the comb spectrum waveform cognitive filtering detection algorithm is proposed. The simulation and lake experimental results show that the PTFM signals’ reverberation suppression ability for low-speed targets was better than it was for stationary or high-speed targets. The proposed method has good universality, which can improve the output signal-to-reverberation ratio (SRR) by more than 6 dB.
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spelling pubmed-97779242022-12-23 A Reverberation Suppression Method Based on the Joint Design of a PTFM Waveform and Receiver Filter Yue, Lei Liang, Hong Duan, Tong Dai, Zezhou Entropy (Basel) Article Transmitting waveform design and signal processing method optimization are effective ways to improve a sonar system’s detection performance. In this study, the spectrum and ambiguity function characteristics of pulse trains of frequency modulation (PTFM) signals were deduced and analyzed to address the problem of serious reverberation interference in the detection of low-speed targets in shallow water environments. The action mechanisms of PTFM signal parameters on the comb spectrum and bed of nails ambiguity function were identified. PTFM signal parameters were designed according to reverberation suppression requirements. The threshold was calculated using the estimate-before-detect method, and the comb spectrum waveform cognitive filtering detection algorithm is proposed. The simulation and lake experimental results show that the PTFM signals’ reverberation suppression ability for low-speed targets was better than it was for stationary or high-speed targets. The proposed method has good universality, which can improve the output signal-to-reverberation ratio (SRR) by more than 6 dB. MDPI 2022-11-23 /pmc/articles/PMC9777924/ /pubmed/36554112 http://dx.doi.org/10.3390/e24121707 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yue, Lei
Liang, Hong
Duan, Tong
Dai, Zezhou
A Reverberation Suppression Method Based on the Joint Design of a PTFM Waveform and Receiver Filter
title A Reverberation Suppression Method Based on the Joint Design of a PTFM Waveform and Receiver Filter
title_full A Reverberation Suppression Method Based on the Joint Design of a PTFM Waveform and Receiver Filter
title_fullStr A Reverberation Suppression Method Based on the Joint Design of a PTFM Waveform and Receiver Filter
title_full_unstemmed A Reverberation Suppression Method Based on the Joint Design of a PTFM Waveform and Receiver Filter
title_short A Reverberation Suppression Method Based on the Joint Design of a PTFM Waveform and Receiver Filter
title_sort reverberation suppression method based on the joint design of a ptfm waveform and receiver filter
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9777924/
https://www.ncbi.nlm.nih.gov/pubmed/36554112
http://dx.doi.org/10.3390/e24121707
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