A Combined Measurement Method for the Seafloor Positioning, Navigation, and Timing Network
The idea of constructing the “GNSS-like” seafloor geodetic network for underwater positioning, navigation, and timing (PNT) has been proposed by many countries. Based on this idea, this paper introduces the principle of the seafloor PNT network and provides a combined measurement method, including t...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/10/11/1664 |
| _version_ | 1797467627200708608 |
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| author | Jinye Ma Jianhu Zhao |
| author_facet | Jinye Ma Jianhu Zhao |
| author_sort | Jinye Ma |
| collection | DOAJ |
| description | The idea of constructing the “GNSS-like” seafloor geodetic network for underwater positioning, navigation, and timing (PNT) has been proposed by many countries. Based on this idea, this paper introduces the principle of the seafloor PNT network and provides a combined measurement method, including the absolute positioning and the relative positioning. Experimental results show that the positioning difference between the proposed method and circle-sailing positioning is approximately 10 cm, and the observation efficiency is higher than the existing measurement in the seafloor PNT network. In addition, a model is derived to determine the optimal configuration of the unit network (the basic component of the seafloor PNT network), considering the ranging capability of acoustic beacons, which is helpful to balance the side length of the unit network and the number of observation sessions in the relative positioning. Finally, a chain coordinate transfer strategy in the whole seafloor PNT network is proposed, and the positions where the absolute positioning should be carried out in the whole network are derived based on the conditional adjustment model. Based on this strategy, the design schemes of a seafloor PNT network with centimeter, decimeter, and meter positioning accuracy when the acoustic velocity measuring accuracy is 0.02 m/s and the time measuring accuracy is 10<sup>−5</sup> s, are given in the experimental section. |
| first_indexed | 2024-03-09T18:56:23Z |
| format | Article |
| id | doaj.art-0dcc2fc1c5784ef4bba218b6ea47a667 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-09T18:56:23Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-0dcc2fc1c5784ef4bba218b6ea47a6672023-11-24T05:22:34ZengMDPI AGJournal of Marine Science and Engineering2077-13122022-11-011011166410.3390/jmse10111664A Combined Measurement Method for the Seafloor Positioning, Navigation, and Timing NetworkJinye Ma0Jianhu Zhao1School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, ChinaSchool of Geodesy and Geomatics, Wuhan University, Wuhan 430079, ChinaThe idea of constructing the “GNSS-like” seafloor geodetic network for underwater positioning, navigation, and timing (PNT) has been proposed by many countries. Based on this idea, this paper introduces the principle of the seafloor PNT network and provides a combined measurement method, including the absolute positioning and the relative positioning. Experimental results show that the positioning difference between the proposed method and circle-sailing positioning is approximately 10 cm, and the observation efficiency is higher than the existing measurement in the seafloor PNT network. In addition, a model is derived to determine the optimal configuration of the unit network (the basic component of the seafloor PNT network), considering the ranging capability of acoustic beacons, which is helpful to balance the side length of the unit network and the number of observation sessions in the relative positioning. Finally, a chain coordinate transfer strategy in the whole seafloor PNT network is proposed, and the positions where the absolute positioning should be carried out in the whole network are derived based on the conditional adjustment model. Based on this strategy, the design schemes of a seafloor PNT network with centimeter, decimeter, and meter positioning accuracy when the acoustic velocity measuring accuracy is 0.02 m/s and the time measuring accuracy is 10<sup>−5</sup> s, are given in the experimental section.https://www.mdpi.com/2077-1312/10/11/1664“GNSS-like” seafloor geodetic networklong baseline (LBL) hydroacoustic positioning (HPR) networkseafloor PNT networkcombined measurement methodbest configuration of the unit networkchain coordinate transfer strategy |
| spellingShingle | Jinye Ma Jianhu Zhao A Combined Measurement Method for the Seafloor Positioning, Navigation, and Timing Network Journal of Marine Science and Engineering “GNSS-like” seafloor geodetic network long baseline (LBL) hydroacoustic positioning (HPR) network seafloor PNT network combined measurement method best configuration of the unit network chain coordinate transfer strategy |
| title | A Combined Measurement Method for the Seafloor Positioning, Navigation, and Timing Network |
| title_full | A Combined Measurement Method for the Seafloor Positioning, Navigation, and Timing Network |
| title_fullStr | A Combined Measurement Method for the Seafloor Positioning, Navigation, and Timing Network |
| title_full_unstemmed | A Combined Measurement Method for the Seafloor Positioning, Navigation, and Timing Network |
| title_short | A Combined Measurement Method for the Seafloor Positioning, Navigation, and Timing Network |
| title_sort | combined measurement method for the seafloor positioning navigation and timing network |
| topic | “GNSS-like” seafloor geodetic network long baseline (LBL) hydroacoustic positioning (HPR) network seafloor PNT network combined measurement method best configuration of the unit network chain coordinate transfer strategy |
| url | https://www.mdpi.com/2077-1312/10/11/1664 |
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