Galileo multi-day precise orbit determination using L-band and SLR data
The continuously available satellites of European Galileo currently reach more than 25. To explore the rationality and reliability of the L-band and satellite laser ranging (SLR) data processing strategies, we design the Galileo L-band, the SLR-only, and the combined L-band/SLR dynamic precise orbit...
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KeAi Communications Co., Ltd.
2025-01-01
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| Series: | Geodesy and Geodynamics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674984724001009 |
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| author | Tianhe Xu Honglei Yang Song Li Zhenlong Fang Wenfeng Nie Min Li Baoguo Yu |
| author_facet | Tianhe Xu Honglei Yang Song Li Zhenlong Fang Wenfeng Nie Min Li Baoguo Yu |
| author_sort | Tianhe Xu |
| collection | DOAJ |
| description | The continuously available satellites of European Galileo currently reach more than 25. To explore the rationality and reliability of the L-band and satellite laser ranging (SLR) data processing strategies, we design the Galileo L-band, the SLR-only, and the combined L-band/SLR dynamic precise orbit determination (POD) strategies by using the normal equations (NEQs) stacking, and investigate their continuity and stability by employing the Galileo L-band data and SLR observations for the time span of the whole year of 2023, based on the BeiDou/GNSS analysis center platform of Shandong University by using the modified Bernese GNSS Software Version 5.4. The orbital consistency of the L-band 1-day solution is the best with the Three-dimensional Root-Mean-Square (3D-RMS) values of 3.6 cm compared with the Center for Orbit Determination in Europe Multi-GNSS Experiment (COM) orbits, the corresponding values is 1.4 cm, 2.5 cm, and 2.3 cm in Radial, the Tangential, and the Normal (RTN) direction, respectively. While the SLR-only 9-day arc length is optimal with the RTN values of 5.3 cm, 30 cm, and 38.2 cm, as well as the 3D-RMS values of 48.9 cm. Encouragingly, the difference of the orbital accuracy between the combined L-band/SLR multi-day solution and the COM orbits is reduced by 0.5 cm and 0.9 cm, 0.6 cm and 1.2 cm in T-, and N-direction for the 3- and 5-day solution respectively. The corresponding values improve 0.7 cm and 0.9 cm, 1.4 cm and 1.8 cm for the 3- and 5-day orbital overlaps difference between the combined L-band/SLR and the L-band solution. Take the E09 satellite as a case study, the SLR-only orbital accuracy is regularly optimized as the multi-day arc lengthens and with the sites increase. Furthermore, the SLR residuals of its three types of orbits further demonstrate the positive contribution of SLR to the combination of the GNSS and SLR techniques. |
| format | Article |
| id | doaj-art-af291bbe60a8416cbdf29929e4fee78d |
| institution | Kabale University |
| issn | 1674-9847 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | KeAi Communications Co., Ltd. |
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| series | Geodesy and Geodynamics |
| spelling | doaj-art-af291bbe60a8416cbdf29929e4fee78d2025-01-13T04:18:36ZengKeAi Communications Co., Ltd.Geodesy and Geodynamics1674-98472025-01-0116199110Galileo multi-day precise orbit determination using L-band and SLR dataTianhe Xu0Honglei Yang1Song Li2Zhenlong Fang3Wenfeng Nie4Min Li5Baoguo Yu6Shandong Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai 264209, ChinaNavigation Laboratory of the 54th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang 050050, China; Corresponding author.Shandong Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai 264209, ChinaShandong Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai 264209, ChinaShandong Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai 264209, ChinaShandong Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai 264209, ChinaNavigation Laboratory of the 54th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang 050050, ChinaThe continuously available satellites of European Galileo currently reach more than 25. To explore the rationality and reliability of the L-band and satellite laser ranging (SLR) data processing strategies, we design the Galileo L-band, the SLR-only, and the combined L-band/SLR dynamic precise orbit determination (POD) strategies by using the normal equations (NEQs) stacking, and investigate their continuity and stability by employing the Galileo L-band data and SLR observations for the time span of the whole year of 2023, based on the BeiDou/GNSS analysis center platform of Shandong University by using the modified Bernese GNSS Software Version 5.4. The orbital consistency of the L-band 1-day solution is the best with the Three-dimensional Root-Mean-Square (3D-RMS) values of 3.6 cm compared with the Center for Orbit Determination in Europe Multi-GNSS Experiment (COM) orbits, the corresponding values is 1.4 cm, 2.5 cm, and 2.3 cm in Radial, the Tangential, and the Normal (RTN) direction, respectively. While the SLR-only 9-day arc length is optimal with the RTN values of 5.3 cm, 30 cm, and 38.2 cm, as well as the 3D-RMS values of 48.9 cm. Encouragingly, the difference of the orbital accuracy between the combined L-band/SLR multi-day solution and the COM orbits is reduced by 0.5 cm and 0.9 cm, 0.6 cm and 1.2 cm in T-, and N-direction for the 3- and 5-day solution respectively. The corresponding values improve 0.7 cm and 0.9 cm, 1.4 cm and 1.8 cm for the 3- and 5-day orbital overlaps difference between the combined L-band/SLR and the L-band solution. Take the E09 satellite as a case study, the SLR-only orbital accuracy is regularly optimized as the multi-day arc lengthens and with the sites increase. Furthermore, the SLR residuals of its three types of orbits further demonstrate the positive contribution of SLR to the combination of the GNSS and SLR techniques.http://www.sciencedirect.com/science/article/pii/S1674984724001009GalileoPODSLRL-bandNEQs stacking |
| spellingShingle | Tianhe Xu Honglei Yang Song Li Zhenlong Fang Wenfeng Nie Min Li Baoguo Yu Galileo multi-day precise orbit determination using L-band and SLR data Geodesy and Geodynamics Galileo POD SLR L-band NEQs stacking |
| title | Galileo multi-day precise orbit determination using L-band and SLR data |
| title_full | Galileo multi-day precise orbit determination using L-band and SLR data |
| title_fullStr | Galileo multi-day precise orbit determination using L-band and SLR data |
| title_full_unstemmed | Galileo multi-day precise orbit determination using L-band and SLR data |
| title_short | Galileo multi-day precise orbit determination using L-band and SLR data |
| title_sort | galileo multi day precise orbit determination using l band and slr data |
| topic | Galileo POD SLR L-band NEQs stacking |
| url | http://www.sciencedirect.com/science/article/pii/S1674984724001009 |
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