A Dedispersion Transform Method for Extracting the Normal Modes of a Shallow Water Acoustic Signal in the Pekeris Waveguide
The normal modes cannot be extracted even in the Pekeris waveguide when the source-receiver distance is very close. This paper introduces a normal mode extraction method based on a dedispersion transform (DDT) to solve this problem. The method presented here takes advantage of DDT, which is based on...
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Institute of Fundamental Technological Research Polish Academy of Sciences
2015-01-01
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| Series: | Archives of Acoustics |
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| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/298 |
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| author | Guang-Bing YANG Lian-Gang LÜ Da-Zhi GAO Ying JIANG Hong-Ning LIU |
| author_facet | Guang-Bing YANG Lian-Gang LÜ Da-Zhi GAO Ying JIANG Hong-Ning LIU |
| author_sort | Guang-Bing YANG |
| collection | DOAJ |
| description | The normal modes cannot be extracted even in the Pekeris waveguide when the source-receiver distance is very close. This paper introduces a normal mode extraction method based on a dedispersion transform (DDT) to solve this problem. The method presented here takes advantage of DDT, which is based on the waveguide invariant such that the dispersion associated with all of the normal modes is removed at the same time. After performing DDT on a signal received in the Pekeris waveguide, the waveform of resulting normal modes is very close to the source signal, each with different position and amplitude. Each normal mode can be extracted by determining its position and amplitude parameters by applying particle swarm optimization (PSO). The waveform of the extracted normal mode is simply the waveform of the source signal; the real waveform of the received normal mode can then be recovered by applying dispersion compensation to the source signal. The method presented needs only one receiver and is verified with experimental data. |
| format | Article |
| id | doaj-art-94c4eb57a28b415fac7ee2f9074e37e4 |
| institution | DOAJ |
| issn | 0137-5075 2300-262X |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Institute of Fundamental Technological Research Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Acoustics |
| spelling | doaj-art-94c4eb57a28b415fac7ee2f9074e37e42025-08-20T02:39:19ZengInstitute of Fundamental Technological Research Polish Academy of SciencesArchives of Acoustics0137-50752300-262X2015-01-0140110.1515/aoa-2015-0002A Dedispersion Transform Method for Extracting the Normal Modes of a Shallow Water Acoustic Signal in the Pekeris WaveguideGuang-Bing YANG0Lian-Gang LÜ1Da-Zhi GAO2Ying JIANG3Hong-Ning LIU4South China Sea Institute of Oceanology, Chinese Academy of Sciences University of Chinese Academy of Sciences Key Laboratory of Marine Science and Numerical Modeling, The First Institute of Oceanography, SOAKey Laboratory of Marine Science and Numerical Modeling, The First Institute of Oceanography, SOACollege of Information Science and Technology, Ocean University of ChinaKey Laboratory of Marine Science and Numerical Modeling, The First Institute of Oceanography, SOAKey Laboratory of Marine Science and Numerical Modeling, The First Institute of Oceanography, SOAThe normal modes cannot be extracted even in the Pekeris waveguide when the source-receiver distance is very close. This paper introduces a normal mode extraction method based on a dedispersion transform (DDT) to solve this problem. The method presented here takes advantage of DDT, which is based on the waveguide invariant such that the dispersion associated with all of the normal modes is removed at the same time. After performing DDT on a signal received in the Pekeris waveguide, the waveform of resulting normal modes is very close to the source signal, each with different position and amplitude. Each normal mode can be extracted by determining its position and amplitude parameters by applying particle swarm optimization (PSO). The waveform of the extracted normal mode is simply the waveform of the source signal; the real waveform of the received normal mode can then be recovered by applying dispersion compensation to the source signal. The method presented needs only one receiver and is verified with experimental data.https://acoustics.ippt.pan.pl/index.php/aa/article/view/298normal mode extractiondedispersion transformPekeris waveguidesource ranging. |
| spellingShingle | Guang-Bing YANG Lian-Gang LÜ Da-Zhi GAO Ying JIANG Hong-Ning LIU A Dedispersion Transform Method for Extracting the Normal Modes of a Shallow Water Acoustic Signal in the Pekeris Waveguide Archives of Acoustics normal mode extraction dedispersion transform Pekeris waveguide source ranging. |
| title | A Dedispersion Transform Method for Extracting the Normal Modes of a Shallow Water Acoustic Signal in the Pekeris Waveguide |
| title_full | A Dedispersion Transform Method for Extracting the Normal Modes of a Shallow Water Acoustic Signal in the Pekeris Waveguide |
| title_fullStr | A Dedispersion Transform Method for Extracting the Normal Modes of a Shallow Water Acoustic Signal in the Pekeris Waveguide |
| title_full_unstemmed | A Dedispersion Transform Method for Extracting the Normal Modes of a Shallow Water Acoustic Signal in the Pekeris Waveguide |
| title_short | A Dedispersion Transform Method for Extracting the Normal Modes of a Shallow Water Acoustic Signal in the Pekeris Waveguide |
| title_sort | dedispersion transform method for extracting the normal modes of a shallow water acoustic signal in the pekeris waveguide |
| topic | normal mode extraction dedispersion transform Pekeris waveguide source ranging. |
| url | https://acoustics.ippt.pan.pl/index.php/aa/article/view/298 |
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