Characteristics of Low-Frequency Acoustic Wave Propagation in Ice-Covered Shallow Water Environment
Mastering the sound propagation law of low-frequency signals in the Arctic is a major frontier basic research demand to improve the level of detection, communication, and navigation technology. It is of practical significance for long-distance sound propagation and underwater target detection in the...
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2021
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ftmdpi:oai:mdpi.com:/2076-3417/11/17/7815/ 2023-08-20T04:03:52+02:00 Characteristics of Low-Frequency Acoustic Wave Propagation in Ice-Covered Shallow Water Environment Shande Li Shuai Yuan Shaowei Liu Jian Wen Qibai Huang Zhifu Zhang agris 2021-08-25 application/pdf https://doi.org/10.3390/app11177815 EN eng Multidisciplinary Digital Publishing Institute Acoustics and Vibrations https://dx.doi.org/10.3390/app11177815 https://creativecommons.org/licenses/by/4.0/ Applied Sciences; Volume 11; Issue 17; Pages: 7815 low frequency polar shallow water environment elastic parabolic equation Text 2021 ftmdpi https://doi.org/10.3390/app11177815 2023-08-01T02:31:34Z Mastering the sound propagation law of low-frequency signals in the Arctic is a major frontier basic research demand to improve the level of detection, communication, and navigation technology. It is of practical significance for long-distance sound propagation and underwater target detection in the Arctic Ocean. Therefore, how to establish an effective model to study the characteristics of the acoustic field in the Arctic area has always been a hot topic in polar acoustic research. Aimed at solving this problem, a mathematical polar acoustic field model with an elastic seafloor is developed based on a range-dependent elastic parabolic equation theory. Moreover, this method is applied to study the characteristics of polar sound propagation for the first attempt. The validity and effectiveness of the method and model are verified by the elastic normal mode method. Simultaneously, the propagation characteristics of low-frequency signals are studied in a polar sound field from three aspects, which are seafloor parameters, sea depth, and ice thickness. The results show that the elastic parabolic equation method can be well utilized to the Arctic low-frequency acoustic field. The analysis of the influence factors of the polar sound field reveals the laws of sound transmission loss of low-frequency signals, which is of great significance to provide information prediction for underwater submarine target detection and target recognition. Text Arctic Arctic Ocean MDPI Open Access Publishing Arctic Arctic Ocean Applied Sciences 11 17 7815 |
institution |
Open Polar |
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MDPI Open Access Publishing |
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ftmdpi |
language |
English |
topic |
low frequency polar shallow water environment elastic parabolic equation |
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low frequency polar shallow water environment elastic parabolic equation Shande Li Shuai Yuan Shaowei Liu Jian Wen Qibai Huang Zhifu Zhang Characteristics of Low-Frequency Acoustic Wave Propagation in Ice-Covered Shallow Water Environment |
topic_facet |
low frequency polar shallow water environment elastic parabolic equation |
description |
Mastering the sound propagation law of low-frequency signals in the Arctic is a major frontier basic research demand to improve the level of detection, communication, and navigation technology. It is of practical significance for long-distance sound propagation and underwater target detection in the Arctic Ocean. Therefore, how to establish an effective model to study the characteristics of the acoustic field in the Arctic area has always been a hot topic in polar acoustic research. Aimed at solving this problem, a mathematical polar acoustic field model with an elastic seafloor is developed based on a range-dependent elastic parabolic equation theory. Moreover, this method is applied to study the characteristics of polar sound propagation for the first attempt. The validity and effectiveness of the method and model are verified by the elastic normal mode method. Simultaneously, the propagation characteristics of low-frequency signals are studied in a polar sound field from three aspects, which are seafloor parameters, sea depth, and ice thickness. The results show that the elastic parabolic equation method can be well utilized to the Arctic low-frequency acoustic field. The analysis of the influence factors of the polar sound field reveals the laws of sound transmission loss of low-frequency signals, which is of great significance to provide information prediction for underwater submarine target detection and target recognition. |
format |
Text |
author |
Shande Li Shuai Yuan Shaowei Liu Jian Wen Qibai Huang Zhifu Zhang |
author_facet |
Shande Li Shuai Yuan Shaowei Liu Jian Wen Qibai Huang Zhifu Zhang |
author_sort |
Shande Li |
title |
Characteristics of Low-Frequency Acoustic Wave Propagation in Ice-Covered Shallow Water Environment |
title_short |
Characteristics of Low-Frequency Acoustic Wave Propagation in Ice-Covered Shallow Water Environment |
title_full |
Characteristics of Low-Frequency Acoustic Wave Propagation in Ice-Covered Shallow Water Environment |
title_fullStr |
Characteristics of Low-Frequency Acoustic Wave Propagation in Ice-Covered Shallow Water Environment |
title_full_unstemmed |
Characteristics of Low-Frequency Acoustic Wave Propagation in Ice-Covered Shallow Water Environment |
title_sort |
characteristics of low-frequency acoustic wave propagation in ice-covered shallow water environment |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2021 |
url |
https://doi.org/10.3390/app11177815 |
op_coverage |
agris |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_source |
Applied Sciences; Volume 11; Issue 17; Pages: 7815 |
op_relation |
Acoustics and Vibrations https://dx.doi.org/10.3390/app11177815 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/app11177815 |
container_title |
Applied Sciences |
container_volume |
11 |
container_issue |
17 |
container_start_page |
7815 |
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1774714298548879360 |