Knowledge Management System Of National Time Service Center,CAS
| Integrity monitoring for precise orbit determination of LEO satellites | |
| Wang, Kan1,2,3; El-Mowafy, Ahmed1; Rizos, Chris4 | |
| 2022 | |
| 发表期刊 | GPS SOLUTIONS
 |
| ISSN | 1080-5370 |
| 卷号 | 26期号:1页码:13 |
| 摘要 | Due to an increasing requirement for high accuracy orbital information for low Earth orbit (LEO) satellites, precise orbit determination (POD) of LEO satellites is a topic of growing interest. To assure the safety and reliability of the applications requiring high accuracy LEO orbits in near-real-time, integrity monitoring (IM) is an essential operation of the POD process. In this contribution, the IM strategy for LEO POD in both the kinematic and reduced-dynamic modes is investigated. The overbounding parameters of the signal-in-space range error are investigated for the GPS products provided by the International GNSS Service's Real-Time Service and the Multi-GNSS Advanced Demonstration of Orbit and Clock Analysis service. Benefiting from the dynamic models used and the improved model strength, the test results based on the data of the LEO satellite GRACE FO-1 show that the average-case mean protection levels (PLs) can be reduced from about 3-4 m in the kinematic mode to about 1 m in the reduced-dynamic mode in the radial, along-track and cross-track directions. The overbounding mean values of the SISRE play the dominant role in the final PLs. In the reduced-dynamic mode and average-case projection, the IM availabilities reach above 99% in the radial, along-track and cross-track directions with the alert limit (AL) set to 2 m. The values are still above 98% with the AL set to 4 m, when the duty cycle of tracking is reduced to 40%, e.g., in the case of power limits for miniature satellites such as CubeSats. |
| 关键词 | LEO POD Integrity monitoring GPS Protection level |
| 资助者 | Australian Research Council ; Australian Research Council ; Chinese Academy of Sciences, "Light of West China" Program ; Chinese Academy of Sciences, "Light of West China" Program ; Australian Research Council ; Australian Research Council ; Chinese Academy of Sciences, "Light of West China" Program ; Chinese Academy of Sciences, "Light of West China" Program ; Australian Research Council ; Australian Research Council ; Chinese Academy of Sciences, "Light of West China" Program ; Chinese Academy of Sciences, "Light of West China" Program ; Australian Research Council ; Australian Research Council ; Chinese Academy of Sciences, "Light of West China" Program ; Chinese Academy of Sciences, "Light of West China" Program |
| DOI | 10.1007/s10291-021-01200-4 |
| 关键词[WOS] | SERVICE ; CLOCK ; GNSS |
| 语种 | 英语 |
| 资助项目 | Australian Research Council[DP 190102444] ; Chinese Academy of Sciences, "Light of West China" Program[XAB2018YDYL01] |
| 资助者 | Australian Research Council ; Australian Research Council ; Chinese Academy of Sciences, "Light of West China" Program ; Chinese Academy of Sciences, "Light of West China" Program ; Australian Research Council ; Australian Research Council ; Chinese Academy of Sciences, "Light of West China" Program ; Chinese Academy of Sciences, "Light of West China" Program ; Australian Research Council ; Australian Research Council ; Chinese Academy of Sciences, "Light of West China" Program ; Chinese Academy of Sciences, "Light of West China" Program ; Australian Research Council ; Australian Research Council ; Chinese Academy of Sciences, "Light of West China" Program ; Chinese Academy of Sciences, "Light of West China" Program |
| WOS研究方向 | Remote Sensing |
| WOS类目 | Remote Sensing |
| WOS记录号 | WOS:000734039300001 |
| 出版者 | SPRINGER HEIDELBERG |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://210.72.145.45/handle/361003/14006 |
| 专题 | 高精度时间传递与精密测定轨研究室 |
| 通讯作者 | El-Mowafy, Ahmed |
| 作者单位 | 1.Curtin Univ, Sch Earth & Planetary Sci, Perth, WA, Australia 2.Chinese Acad Sci, Natl Time Serv Ctr, Xian, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.UNSW, Sch Civil & Environm Engn, Sydney, NSW, Australia |
| 推荐引用方式 GB/T 7714 | Wang, Kan,El-Mowafy, Ahmed,Rizos, Chris. Integrity monitoring for precise orbit determination of LEO satellites[J]. GPS SOLUTIONS,2022,26(1):13. |
| APA | Wang, Kan,El-Mowafy, Ahmed,&Rizos, Chris.(2022).Integrity monitoring for precise orbit determination of LEO satellites.GPS SOLUTIONS,26(1),13. |
| MLA | Wang, Kan,et al."Integrity monitoring for precise orbit determination of LEO satellites".GPS SOLUTIONS 26.1(2022):13. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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