Abstract
Satellite attitude modes and antenna phase center variations have a great influence on the Precise Orbit Determination (POD) of Low Earth Orbit satellites (LEOs). Inaccurate information about spacecraft attitude, phase center offsets and variations in the POD leads to orbital error. The Jason-3 satellite experienced complex attitude modes which are fixed, sinusoidal, ramp-up/down and yaw-flip. Therefore, it is necessary to properly construct the attitude model in the process of POD especially when there is no external attitude data. For the antenna phase center correction, the PCO which is the deviation between Antenna Reference Point (ARP) and Mean Antenna Phase Center (MAPC) usually can be calibrated on the ground accurately, but the PCV which is the deviation between Instantaneous Antenna Phase Center (IAPC) and Mean Antenna Phase Center (MAPC) will change greatly with the change of space environment. Residual approach can be used to estimate the receiver PCV map. In this paper, we collected the on-board GPS data of Jason-3 satellite from January 2019 and analyzed the impacts of PCV and spacecraft attitude on the orbit accuracy by performing the reduced-dynamic POD. Compared with the reference orbit released by the Centre National d’Études Spatiales (CNES), using the PCV map can reduce the Root Mean Square (RMS) of orbit differences in the Radial (R), Along-track (T), Cross-track (N) and 3D direction about 0.3, 1.0, 0.9, and 1.4 mm. Based on the estimated PCV map, the orbit accuracy in R, T, N and 3D direction is 1.24, 2.81, 1.17, and 3.29 cm respectively by using the measured attitude data. When using the attitude model, the orbit accuracy in R, T, N and 3D directions is 1.60, 3.54, 1.33, and 4.13 cm, respectively. The results showed that the combination of measured attitude data and modeled PCV map can obtain the better orbit solution. It is essential to build a corresponding model in high-precision orbit determination, when there is no attitude data and PCV map.
Funding source: National Natural Science Foundation of China
Award Identifier / Grant number: 11803032
Award Identifier / Grant number: 12103077
Award Identifier / Grant number: 12173072
Funding statement: This work is supported by the National Natural Science Foundation of China (Grant No. 11803032, 12103077, 12173072).
Acknowledgments
We would like to thank CNES for providing the on-board GPS observation data of the Jason-3 satellite and its precise orbit, and CODE for providing the GPS precise orbit and clock products. Additionally, the authors extend their appreciation to the editors and anonymous reviewers for their constructive suggestions that helped to enhance the original manuscript.
References
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© 2022 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Research Articles
- Validating the impact of various ionosphere correction on mid to long baselines and point positioning using GPS dual-frequency receivers
- Target-based terrestrial laser scan registration extended by target orientation
- Linear discontinuous ground deformation detection based on coherence analysis of pre and post event radar image pairs
- GNSS time and frequency transfers through national positioning, navigation and timing infrastructure
- Recent GPS-based long wavelength crustal deformation revealed active postseismic deformation due to the 2006 Yogyakarta earthquake
- Effect of PCV and attitude on the precise orbit determination of Jason-3 satellite
- Geometric quality control for bio-based building elements: Study case segmented experimental shell
Artikel in diesem Heft
- Frontmatter
- Research Articles
- Validating the impact of various ionosphere correction on mid to long baselines and point positioning using GPS dual-frequency receivers
- Target-based terrestrial laser scan registration extended by target orientation
- Linear discontinuous ground deformation detection based on coherence analysis of pre and post event radar image pairs
- GNSS time and frequency transfers through national positioning, navigation and timing infrastructure
- Recent GPS-based long wavelength crustal deformation revealed active postseismic deformation due to the 2006 Yogyakarta earthquake
- Effect of PCV and attitude on the precise orbit determination of Jason-3 satellite
- Geometric quality control for bio-based building elements: Study case segmented experimental shell