Simulation Analysis of Inverting Marine Vertical Deflection Using Spaceborne GNSS-R Interferometric Altimetry
Global marine vertical deflection is essential for understanding Earth's internal mass and density distribution and improving the long-term inertial navigation accuracy of underwater vehicles. Spaceborne global navigation satellite system reflectometry (GNSS-R) interferometric altimetry,...
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IEEE
2025-01-01
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| Series: | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
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| Online Access: | https://ieeexplore.ieee.org/document/10807088/ |
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| author | Lichang Duan Junming Xia Weihua Bai Zhenhe Zhai Feixiong Huang Cong Yin Yueqiang Sun Qifei Du Dongwei Wang Xianyi Wang Yixuan Sun Shengyu Kang Guanyi Wang Xiaofeng Meng Yunlong Du |
| author_facet | Lichang Duan Junming Xia Weihua Bai Zhenhe Zhai Feixiong Huang Cong Yin Yueqiang Sun Qifei Du Dongwei Wang Xianyi Wang Yixuan Sun Shengyu Kang Guanyi Wang Xiaofeng Meng Yunlong Du |
| author_sort | Lichang Duan |
| collection | DOAJ |
| description | Global marine vertical deflection is essential for understanding Earth's internal mass and density distribution and improving the long-term inertial navigation accuracy of underwater vehicles. Spaceborne global navigation satellite system reflectometry (GNSS-R) interferometric altimetry, with its advantages of low-cost, rapid global coverage, and revisiting capability, shows promise as new data for compensating the radar altimeters. In this study, we present the first simulation of spaceborne GNSS-R interferometric altimetry data based on FY-3E GNSS-R trajectory and evaluate its potential for inverting global marine vertical deflection. Our results showed that, in the operational scenario (with a spatial resolution of 10 km and an altimetry accuracy of 14.68 cm), the total accuracy of marine vertical deflection for global 2.5′, 5′, and 20′ grids, obtained from ten years of simulation data, was 4.998″, 1.268″, and 0.1″, respectively. Furthermore, we observed that, when the average global revisit times reached approximately 90 times and 6 times, the total accuracy of marine vertical deflection for global 5′ and 20′ grids was below 1″. As the GNSS-R detection on the FY-3E satellite covers 90% of the global sea area in 20′ grids within 23 days, with an average revisit time of 7.3, spaceborne GNSS-R interferometric altimetry has the potential to invert the high-precision time-variable gravity field with a 20′ resolution, thus compensating for the lower resolution provided by satellite gravimetry. |
| format | Article |
| id | doaj-art-60bf543c669f43b98606f8c862c9715a |
| institution | Kabale University |
| issn | 1939-1404 2151-1535 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
| spelling | doaj-art-60bf543c669f43b98606f8c862c9715a2025-01-16T00:00:49ZengIEEEIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing1939-14042151-15352025-01-01182668267910.1109/JSTARS.2024.352018610807088Simulation Analysis of Inverting Marine Vertical Deflection Using Spaceborne GNSS-R Interferometric AltimetryLichang Duan0https://orcid.org/0000-0002-1101-7057Junming Xia1https://orcid.org/0000-0002-3876-1708Weihua Bai2https://orcid.org/0000-0002-7002-787XZhenhe Zhai3Feixiong Huang4https://orcid.org/0000-0002-6888-280XCong Yin5https://orcid.org/0000-0002-0238-4568Yueqiang Sun6Qifei Du7Dongwei Wang8Xianyi Wang9https://orcid.org/0000-0002-2438-6900Yixuan Sun10Shengyu Kang11Guanyi Wang12Xiaofeng Meng13Yunlong Du14https://orcid.org/0009-0006-6375-6894Beijing Key Laboratory of Space Environment Exploration, National Space Science Center, Chinese Academy of Sciences, Beijing, ChinaBeijing Key Laboratory of Space Environment Exploration, National Space Science Center, Chinese Academy of Sciences, Beijing, ChinaBeijing Key Laboratory of Space Environment Exploration, National Space Science Center, Chinese Academy of Sciences, Beijing, ChinaState Key Laboratory of Geo-Information Engineering, Xi'an, ChinaBeijing Key Laboratory of Space Environment Exploration, National Space Science Center, Chinese Academy of Sciences, Beijing, ChinaBeijing Key Laboratory of Space Environment Exploration, National Space Science Center, Chinese Academy of Sciences, Beijing, ChinaBeijing Key Laboratory of Space Environment Exploration, National Space Science Center, Chinese Academy of Sciences, Beijing, ChinaBeijing Key Laboratory of Space Environment Exploration, National Space Science Center, Chinese Academy of Sciences, Beijing, ChinaBeijing Key Laboratory of Space Environment Exploration, National Space Science Center, Chinese Academy of Sciences, Beijing, ChinaBeijing Key Laboratory of Space Environment Exploration, National Space Science Center, Chinese Academy of Sciences, Beijing, ChinaBeijing Key Laboratory of Space Environment Exploration, National Space Science Center, Chinese Academy of Sciences, Beijing, ChinaSchool of Computer and Communication Engineering, University of Science and Technology, Beijing, ChinaBeijing Key Laboratory of Space Environment Exploration, National Space Science Center, Chinese Academy of Sciences, Beijing, ChinaBeijing Key Laboratory of Space Environment Exploration, National Space Science Center, Chinese Academy of Sciences, Beijing, ChinaBeijing Key Laboratory of Space Environment Exploration, National Space Science Center, Chinese Academy of Sciences, Beijing, ChinaGlobal marine vertical deflection is essential for understanding Earth's internal mass and density distribution and improving the long-term inertial navigation accuracy of underwater vehicles. Spaceborne global navigation satellite system reflectometry (GNSS-R) interferometric altimetry, with its advantages of low-cost, rapid global coverage, and revisiting capability, shows promise as new data for compensating the radar altimeters. In this study, we present the first simulation of spaceborne GNSS-R interferometric altimetry data based on FY-3E GNSS-R trajectory and evaluate its potential for inverting global marine vertical deflection. Our results showed that, in the operational scenario (with a spatial resolution of 10 km and an altimetry accuracy of 14.68 cm), the total accuracy of marine vertical deflection for global 2.5′, 5′, and 20′ grids, obtained from ten years of simulation data, was 4.998″, 1.268″, and 0.1″, respectively. Furthermore, we observed that, when the average global revisit times reached approximately 90 times and 6 times, the total accuracy of marine vertical deflection for global 5′ and 20′ grids was below 1″. As the GNSS-R detection on the FY-3E satellite covers 90% of the global sea area in 20′ grids within 23 days, with an average revisit time of 7.3, spaceborne GNSS-R interferometric altimetry has the potential to invert the high-precision time-variable gravity field with a 20′ resolution, thus compensating for the lower resolution provided by satellite gravimetry.https://ieeexplore.ieee.org/document/10807088/Global navigation satellite system reflectometry (GNSS-R)interferometric altimetrymarine vertical deflectionrevisitssatellite altimetry |
| spellingShingle | Lichang Duan Junming Xia Weihua Bai Zhenhe Zhai Feixiong Huang Cong Yin Yueqiang Sun Qifei Du Dongwei Wang Xianyi Wang Yixuan Sun Shengyu Kang Guanyi Wang Xiaofeng Meng Yunlong Du Simulation Analysis of Inverting Marine Vertical Deflection Using Spaceborne GNSS-R Interferometric Altimetry IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing Global navigation satellite system reflectometry (GNSS-R) interferometric altimetry marine vertical deflection revisits satellite altimetry |
| title | Simulation Analysis of Inverting Marine Vertical Deflection Using Spaceborne GNSS-R Interferometric Altimetry |
| title_full | Simulation Analysis of Inverting Marine Vertical Deflection Using Spaceborne GNSS-R Interferometric Altimetry |
| title_fullStr | Simulation Analysis of Inverting Marine Vertical Deflection Using Spaceborne GNSS-R Interferometric Altimetry |
| title_full_unstemmed | Simulation Analysis of Inverting Marine Vertical Deflection Using Spaceborne GNSS-R Interferometric Altimetry |
| title_short | Simulation Analysis of Inverting Marine Vertical Deflection Using Spaceborne GNSS-R Interferometric Altimetry |
| title_sort | simulation analysis of inverting marine vertical deflection using spaceborne gnss r interferometric altimetry |
| topic | Global navigation satellite system reflectometry (GNSS-R) interferometric altimetry marine vertical deflection revisits satellite altimetry |
| url | https://ieeexplore.ieee.org/document/10807088/ |
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