| Study of Fast and Reliable Time Transfer Methods Using Low Earth Orbit Enhancement | |
| Liu, Mingyue1,2,3; Tu, Rui1,2,3,4; Chen, Qiushi5; Li, Qi6; Chen, Junmei6; Zhang, Pengfei1,2,3; Lu, Xiaochun1,2,3 | |
| 2024-06-01 | |
| 发表期刊 | REMOTE SENSING
 |
| 卷号 | 16期号:11页码:20 |
| 摘要 | The Global Navigation Satellite System (GNSS) can be utilized for long-distance and high-precision time transmission. With the ongoing development of low Earth orbit (LEO) satellites and the rapidly changing geometric relationships between them, the convergence rate of ambiguity parameters in Precise Point Positioning (PPP) algorithms has increased, enabling fast and reliable time transfer. In this paper, GPS is used as an experimental case, the LEO satellite constellation is designed, and simulated LEO observation data are generated. Then, using the GPS observation data provided by IGS, a LEO-enhanced PPP model is established. The LEO-augmented PPP model is employed to facilitate faster and more reliable high-precision time transfer. The application of the LEO-augmented PPP model to time transfer is examined and discussed through experimental examples. These examples show multiple types of time transfer links, and the experimental outcomes are uniform. GPS + LEO is compared with exclusive GPS time transfer schemes. The clock offset of the time transfer link for the GPS + LEO scheme converges more swiftly, meaning that the time required for the clock offset to reach a stable level is the briefest. In this paper, standard deviation is employed to assess stability, and Allan deviation is utilized to assess frequency stability. The results show that the clock offset stability and frequency stability achieved by the GPS + LEO scheme are superior within the convergence time range. Controlled experiments with different numbers of satellites for LEO enhancement indicate that time transfer performance can be improved by increasing the number of satellites. As a result, augmenting GPS tracking data with LEO observations enhances the time transfer service compared to GPS alone. |
| 关键词 | low Earth orbit satellite precise point positioning global navigation satellite system time transfer |
| 资助者 | National Key R&D Program of China and Shandong Province ; National Key R&D Program of China and Shandong Province ; Chinese Academy of Sciences (CAS) programs of "High Level Talents" ; Chinese Academy of Sciences (CAS) programs of "High Level Talents" ; National Key R&D Program of China and Shandong Province ; National Key R&D Program of China and Shandong Province ; Chinese Academy of Sciences (CAS) programs of "High Level Talents" ; Chinese Academy of Sciences (CAS) programs of "High Level Talents" ; National Key R&D Program of China and Shandong Province ; National Key R&D Program of China and Shandong Province ; Chinese Academy of Sciences (CAS) programs of "High Level Talents" ; Chinese Academy of Sciences (CAS) programs of "High Level Talents" ; National Key R&D Program of China and Shandong Province ; National Key R&D Program of China and Shandong Province ; Chinese Academy of Sciences (CAS) programs of "High Level Talents" ; Chinese Academy of Sciences (CAS) programs of "High Level Talents" |
| DOI | 10.3390/rs16112044 |
| 语种 | 英语 |
| 资助项目 | National Key R&D Program of China and Shandong Province ; Chinese Academy of Sciences (CAS) programs of "High Level Talents" |
| 资助者 | National Key R&D Program of China and Shandong Province ; National Key R&D Program of China and Shandong Province ; Chinese Academy of Sciences (CAS) programs of "High Level Talents" ; Chinese Academy of Sciences (CAS) programs of "High Level Talents" ; National Key R&D Program of China and Shandong Province ; National Key R&D Program of China and Shandong Province ; Chinese Academy of Sciences (CAS) programs of "High Level Talents" ; Chinese Academy of Sciences (CAS) programs of "High Level Talents" ; National Key R&D Program of China and Shandong Province ; National Key R&D Program of China and Shandong Province ; Chinese Academy of Sciences (CAS) programs of "High Level Talents" ; Chinese Academy of Sciences (CAS) programs of "High Level Talents" ; National Key R&D Program of China and Shandong Province ; National Key R&D Program of China and Shandong Province ; Chinese Academy of Sciences (CAS) programs of "High Level Talents" ; Chinese Academy of Sciences (CAS) programs of "High Level Talents" |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology |
| WOS记录号 | WOS:001245298900001 |
| 出版者 | MDPI |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://210.72.145.45/handle/361003/14611 |
| 专题 | 导航与通信研究室 |
| 通讯作者 | Tu, Rui |
| 作者单位 | 1.Chinese Acad Sci, Natl Time Serv Ctr, Shu Yuan Rd, Xian 710600, Peoples R China 2.Univ Chinese Acad Sci, Yu Quan Rd, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Key Lab Lime Reference & Applicat, Shu Yuan Rd, Xian 710600, Peoples R China 4.Shandong Univ Sci & Technol, Coll Geodesy & Geomat, Qingdao 266590, Peoples R China 5.Air Force Engn Univ, Coll Informat & Nav, East Feng Gao Rd, Xian 710077, Peoples R China 6.Qilu Aerosp Informat Res Inst, 9 Kuang Yuan Rd, Jinan 250100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Mingyue,Tu, Rui,Chen, Qiushi,et al. Study of Fast and Reliable Time Transfer Methods Using Low Earth Orbit Enhancement[J]. REMOTE SENSING,2024,16(11):20. |
| APA | Liu, Mingyue.,Tu, Rui.,Chen, Qiushi.,Li, Qi.,Chen, Junmei.,...&Lu, Xiaochun.(2024).Study of Fast and Reliable Time Transfer Methods Using Low Earth Orbit Enhancement.REMOTE SENSING,16(11),20. |
| MLA | Liu, Mingyue,et al."Study of Fast and Reliable Time Transfer Methods Using Low Earth Orbit Enhancement".REMOTE SENSING 16.11(2024):20. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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