Research and Construction of a Global Hexagonal Marine Gravity Gradient Reference Map for Navigation
A high-precision marine gravity gradient reference map is key to enabling underwater gravity gradient matching navigation. At present, the construction of the reference maps is based on quadrilateral geographic grids. However, quadrilateral grids lead to detriangulation at high latitudes, which limi...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2023/4141572 |
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| _version_ | 1832547835863629824 |
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| author | Huang Yan Li Shanshan Zhou Chuyuan Li Xinxing Lv Minghao Fan Diao Tan Xuli Wang Aoming |
| author_facet | Huang Yan Li Shanshan Zhou Chuyuan Li Xinxing Lv Minghao Fan Diao Tan Xuli Wang Aoming |
| author_sort | Huang Yan |
| collection | DOAJ |
| description | A high-precision marine gravity gradient reference map is key to enabling underwater gravity gradient matching navigation. At present, the construction of the reference maps is based on quadrilateral geographic grids. However, quadrilateral grids lead to detriangulation at high latitudes, which limits the global applicability of such maps to underwater gravity navigation. To circumvent the limitations of quadrilateral grids, a hexagonal grid is introduced for constructing the reference map. This paper analyzes the characteristics of the icosahedral Snyder equal area aperture 4 hexagon (ISEA4H) and H3 grid systems and selects an appropriate grid system. In addition, we calculate and analyze the grid model errors and matching positioning errors of hexagonal and quadrilateral grids at the same resolution. The experimental results show that the grid model and matching positioning errors of a hexagonal grid system are more than 14% and 15% less than those of a quadrilateral grid system, respectively, indicating the feasibility and effectiveness of applying hexagonal grids to gravity gradient matching navigation. Given the low construction efficiency of a marine hexagonal grid gravity gradient reference map, we propose an efficient CPU+GPU hybrid parallel scheme. A global total tensor marine hexagonal grid gravity gradient reference map model is then constructed. |
| format | Article |
| id | doaj-art-4054cbf67a9046aaa5429011101f92de |
| institution | Kabale University |
| issn | 1468-8123 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-4054cbf67a9046aaa5429011101f92de2025-02-03T06:43:13ZengWileyGeofluids1468-81232023-01-01202310.1155/2023/4141572Research and Construction of a Global Hexagonal Marine Gravity Gradient Reference Map for NavigationHuang Yan0Li Shanshan1Zhou Chuyuan2Li Xinxing3Lv Minghao4Fan Diao5Tan Xuli6Wang Aoming7Institute of Surveying and MappingInstitute of Surveying and MappingShenzhen UniversityInstitute of Surveying and Mapping96941 TroopsInstitute of Surveying and MappingInstitute of Surveying and MappingInstitute of Surveying and MappingA high-precision marine gravity gradient reference map is key to enabling underwater gravity gradient matching navigation. At present, the construction of the reference maps is based on quadrilateral geographic grids. However, quadrilateral grids lead to detriangulation at high latitudes, which limits the global applicability of such maps to underwater gravity navigation. To circumvent the limitations of quadrilateral grids, a hexagonal grid is introduced for constructing the reference map. This paper analyzes the characteristics of the icosahedral Snyder equal area aperture 4 hexagon (ISEA4H) and H3 grid systems and selects an appropriate grid system. In addition, we calculate and analyze the grid model errors and matching positioning errors of hexagonal and quadrilateral grids at the same resolution. The experimental results show that the grid model and matching positioning errors of a hexagonal grid system are more than 14% and 15% less than those of a quadrilateral grid system, respectively, indicating the feasibility and effectiveness of applying hexagonal grids to gravity gradient matching navigation. Given the low construction efficiency of a marine hexagonal grid gravity gradient reference map, we propose an efficient CPU+GPU hybrid parallel scheme. A global total tensor marine hexagonal grid gravity gradient reference map model is then constructed.http://dx.doi.org/10.1155/2023/4141572 |
| spellingShingle | Huang Yan Li Shanshan Zhou Chuyuan Li Xinxing Lv Minghao Fan Diao Tan Xuli Wang Aoming Research and Construction of a Global Hexagonal Marine Gravity Gradient Reference Map for Navigation Geofluids |
| title | Research and Construction of a Global Hexagonal Marine Gravity Gradient Reference Map for Navigation |
| title_full | Research and Construction of a Global Hexagonal Marine Gravity Gradient Reference Map for Navigation |
| title_fullStr | Research and Construction of a Global Hexagonal Marine Gravity Gradient Reference Map for Navigation |
| title_full_unstemmed | Research and Construction of a Global Hexagonal Marine Gravity Gradient Reference Map for Navigation |
| title_short | Research and Construction of a Global Hexagonal Marine Gravity Gradient Reference Map for Navigation |
| title_sort | research and construction of a global hexagonal marine gravity gradient reference map for navigation |
| url | http://dx.doi.org/10.1155/2023/4141572 |
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