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Reduced Dynamic Precise Orbit Determination and Orbital Extrapolation of LEO Satellites under Different Gravity Field Models
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Zhenyu LUO1, Chunhua JIANG1, 2, 3, Haiyi FAN1, Huizhong ZHU1
Journal of Geodesy and Geodynamics | 2025, 45(5) : 494 - 499
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Journal of Geodesy and Geodynamics | 2025, 45(5): 494-499
Reduced Dynamic Precise Orbit Determination and Orbital Extrapolation of LEO Satellites under Different Gravity Field Models
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Zhenyu LUO1, Chunhua JIANG1, 2, 3, Haiyi FAN1, Huizhong ZHU1
Affiliations
  • 1 School of Geomatics, Liaoning Technical University, 88 Yulong Road, Fuxin 123000, China
  • 2 State Key Laboratory of Geo-Information Engineering, Xi'an Institute of Surveying and Mapping, 1 Mid-Yanta Road, Xi'an 710054, China
  • 3 State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, CAS, 340 Xudong Street, Wuhan 430077, China

    • LUO Zhenyu, postgraduate, majors in LEO satellites precise orbit determination and clock bias estimation, E-mail:

About Author:

LUO Zhenyu, postgraduate, majors in LEO satellites precise orbit determination and clock bias estimation, E-mail:

Published: 2025-05-15 doi: 10.14075/j.jgg.2024.05.261
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This paper analyzes the orbit determination accuracy and orbit extrapolation accuracy under different gravity field models and finds that the accuracy is higher when the gravity field model order is 100 and 150 compared to when it is 50. In the reduced dynamic orbit determination of GRACE-C and GRACE-D, the 3D directional orbit determination accuracy of EGM2008 and Tongji-Grace02k can reach up to 22.6 mm and 24.0 mm, respectively, both of these gravity field models have better orbit determination accuracy than ITG-Grace03.In orbit extrapolation, Tongji-Grace02k has the highest accuracy, capable of reaching the sub-decimeter level, followed by EGM2008, while ITG-Grace03 has the lowest accuracy, both in decimeter level. Optimizing the random impulse parameters can improve the orbit extrapolation accuracy of the three gravity fields, with the optimization effect being more significant when the model order is 100 and 150 compared to when it is 50.

gravity field model  /  LEO satellites  /  reduced dynamic precise orbit determination  /  orbit extrapolation  /  random pulse parameters
罗振宇, 蒋春华, 范海怡, 祝会忠. 不同重力场模型下低轨卫星的简化动力学定轨与轨道外推. 大地测量与地球动力学, 2025 , 45 (5) : 494 -499 . DOI: 10.14075/j.jgg.2024.05.261
Zhenyu LUO, Chunhua JIANG, Haiyi FAN, Huizhong ZHU. Reduced Dynamic Precise Orbit Determination and Orbital Extrapolation of LEO Satellites under Different Gravity Field Models[J]. Journal of Geodesy and Geodynamics, 2025 , 45 (5) : 494 -499 . DOI: 10.14075/j.jgg.2024.05.261
Funding
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  • National Natural Science Foundation of China(42030109)
  • Basic Scientific Research Projects of Liaoning Higher Education Institutions(LJKMZ20220673)
  • Open Fund of State Key Laboratory of Geodesy and Earth's Dynamics(SKLGED2023-3-2)
Appendix
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Year 2025 volume 45 Issue 5
30
12
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Article Info
doi: 10.14075/j.jgg.2024.05.261
  • Receive Date：2024-05-31
  • Online Date：2026-10-30
  • Published：2025-05-15
Article Data
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History
  • Received：2024-05-31
Funding
National Natural Science Foundation of China(42030109)
Basic Scientific Research Projects of Liaoning Higher Education Institutions(LJKMZ20220673)
Open Fund of State Key Laboratory of Geodesy and Earth's Dynamics(SKLGED2023-3-2)
Affiliations
    1 School of Geomatics, Liaoning Technical University, 88 Yulong Road, Fuxin 123000, China
    2 State Key Laboratory of Geo-Information Engineering, Xi'an Institute of Surveying and Mapping, 1 Mid-Yanta Road, Xi'an 710054, China
    3 State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, CAS, 340 Xudong Street, Wuhan 430077, China
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https://castjournals.cast.org.cn/joweb/ddcl/EN/10.14075/j.jgg.2024.05.261
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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