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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...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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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. |
format | Online Article Text |
id | pubmed-9777924 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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