UNDERWATER ACOUSTIC MODEM WITH HIGH PRECISION RANGING CAPABILITY BASED ON SECOND-LEVEL CESIUM ATOMIC CLOCK
Equipped with a high-precision atomic clock can significantly improve the ranging accuracy of the underwater acoustic ranging system. However, the adverse characteristic of underwater acoustic channel (UAC) seriously deteriorates the ranging accuracy. In addition, as a timing device typically commer...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2022-04-01
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| Series: | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| Online Access: | https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLVI-3-W1-2022/75/2022/isprs-archives-XLVI-3-W1-2022-75-2022.pdf |
| _version_ | 1818523437689208832 |
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| author | J. Li J. Li F. Tong F. Tong W. Jiang W. Jiang S. Roy |
| author_facet | J. Li J. Li F. Tong F. Tong W. Jiang W. Jiang S. Roy |
| author_sort | J. Li |
| collection | DOAJ |
| description | Equipped with a high-precision atomic clock can significantly improve the ranging accuracy of the underwater acoustic ranging system. However, the adverse characteristic of underwater acoustic channel (UAC) seriously deteriorates the ranging accuracy. In addition, as a timing device typically commercial cesium atomic clock is only designed to output second-level time reference, which cannot be applied to underwater ranging systems directly. To overcome this limitation, a new underwater acoustic modem with high precision ranging capability based on second-level cesium atomic clock is developed in this paper. The spread spectrum technology is chosen for highly reliable communication and the second-level commercial cesium atomic clock is used to ensure accurate clock synchronization. The proposed modem executes a predetermined ranging scheme based on spread spectrum technology. Specifically, at a certain specified second-level, the transmitter modem sends the ranging signal, and the receiver modem starts timing. Until the receiving modem detects the ranging signal, the propagation time is obtained and the single-item ranging capability is realized. The pool experiment shows the effectiveness of the modem, its ranging accuracy can reach cm level, and the average absolute error of ranging is 8 cm. |
| first_indexed | 2024-12-11T05:44:54Z |
| format | Article |
| id | doaj.art-5832f94726d642e79593592742efcb85 |
| institution | Directory Open Access Journal |
| issn | 1682-1750 2194-9034 |
| language | English |
| last_indexed | 2024-12-11T05:44:54Z |
| publishDate | 2022-04-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| spelling | doaj.art-5832f94726d642e79593592742efcb852022-12-22T01:18:59ZengCopernicus PublicationsThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences1682-17502194-90342022-04-01XLVI-3-W1-2022758010.5194/isprs-archives-XLVI-3-W1-2022-75-2022UNDERWATER ACOUSTIC MODEM WITH HIGH PRECISION RANGING CAPABILITY BASED ON SECOND-LEVEL CESIUM ATOMIC CLOCKJ. Li0J. Li1F. Tong2F. Tong3W. Jiang4W. Jiang5S. Roy6Key Laboratory of Underwater Acoustic Communication and Marine Information Technology Ministry of Education, Xiamen University, Xiamen 361005, Fujian, ChinaCollege of Oceanic and Earth, Xiamen University, Xiamen 361005, Fujian, ChinaKey Laboratory of Underwater Acoustic Communication and Marine Information Technology Ministry of Education, Xiamen University, Xiamen 361005, Fujian, ChinaCollege of Oceanic and Earth, Xiamen University, Xiamen 361005, Fujian, ChinaKey Laboratory of Underwater Acoustic Communication and Marine Information Technology Ministry of Education, Xiamen University, Xiamen 361005, Fujian, ChinaCollege of Oceanic and Earth, Xiamen University, Xiamen 361005, Fujian, ChinaDepartment of Electrical and Computer Engineering, University of Washington, Seattle, WA, USAEquipped with a high-precision atomic clock can significantly improve the ranging accuracy of the underwater acoustic ranging system. However, the adverse characteristic of underwater acoustic channel (UAC) seriously deteriorates the ranging accuracy. In addition, as a timing device typically commercial cesium atomic clock is only designed to output second-level time reference, which cannot be applied to underwater ranging systems directly. To overcome this limitation, a new underwater acoustic modem with high precision ranging capability based on second-level cesium atomic clock is developed in this paper. The spread spectrum technology is chosen for highly reliable communication and the second-level commercial cesium atomic clock is used to ensure accurate clock synchronization. The proposed modem executes a predetermined ranging scheme based on spread spectrum technology. Specifically, at a certain specified second-level, the transmitter modem sends the ranging signal, and the receiver modem starts timing. Until the receiving modem detects the ranging signal, the propagation time is obtained and the single-item ranging capability is realized. The pool experiment shows the effectiveness of the modem, its ranging accuracy can reach cm level, and the average absolute error of ranging is 8 cm.https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLVI-3-W1-2022/75/2022/isprs-archives-XLVI-3-W1-2022-75-2022.pdf |
| spellingShingle | J. Li J. Li F. Tong F. Tong W. Jiang W. Jiang S. Roy UNDERWATER ACOUSTIC MODEM WITH HIGH PRECISION RANGING CAPABILITY BASED ON SECOND-LEVEL CESIUM ATOMIC CLOCK The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| title | UNDERWATER ACOUSTIC MODEM WITH HIGH PRECISION RANGING CAPABILITY
BASED ON SECOND-LEVEL CESIUM ATOMIC CLOCK |
| title_full | UNDERWATER ACOUSTIC MODEM WITH HIGH PRECISION RANGING CAPABILITY
BASED ON SECOND-LEVEL CESIUM ATOMIC CLOCK |
| title_fullStr | UNDERWATER ACOUSTIC MODEM WITH HIGH PRECISION RANGING CAPABILITY
BASED ON SECOND-LEVEL CESIUM ATOMIC CLOCK |
| title_full_unstemmed | UNDERWATER ACOUSTIC MODEM WITH HIGH PRECISION RANGING CAPABILITY
BASED ON SECOND-LEVEL CESIUM ATOMIC CLOCK |
| title_short | UNDERWATER ACOUSTIC MODEM WITH HIGH PRECISION RANGING CAPABILITY
BASED ON SECOND-LEVEL CESIUM ATOMIC CLOCK |
| title_sort | underwater acoustic modem with high precision ranging capability based on second level cesium atomic clock |
| url | https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLVI-3-W1-2022/75/2022/isprs-archives-XLVI-3-W1-2022-75-2022.pdf |
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