Bidirectional measurement differential positioning method for LEO communication satellites
In non-terrestrial network, leveraging resources such as satellite-to-earth links, satellite payloads, and ground terminals of low earth orbit (LEO) communication satellites to achieve positioning calculations is one of the important technical means for realizing the integration of sensing and commu...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Beijing Xintong Media Co., Ltd
2024-04-01
|
| Series: | Dianxin kexue |
| Subjects: | |
| Online Access: | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2024092/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841533928875229184 |
|---|---|
| author | WANG Xinyang ZHAO Yafei LI Jinkang PENG Mugen |
| author_facet | WANG Xinyang ZHAO Yafei LI Jinkang PENG Mugen |
| author_sort | WANG Xinyang |
| collection | DOAJ |
| description | In non-terrestrial network, leveraging resources such as satellite-to-earth links, satellite payloads, and ground terminals of low earth orbit (LEO) communication satellites to achieve positioning calculations is one of the important technical means for realizing the integration of sensing and communication in future 6G network. In scenarios such as direct-to-handset satellite, terminal designs were often configured to communicate with only one satellite, making the exploration of single-satellite positioning methods of urgent significance. Addressing the challenges of poor positioning accuracy, difficulty in clock synchronization, and slow convergence speed associated with previous single-satellite continuous observation, a bidirectional measurement differential positioning method was proposed in the context of low-orbit constellations. Additionally, a position updating strategy based on the satellite position accuracy factor was designed. Utilizing the satellite-to-earth link, the method employed a one-way bidirectional ranging technique to eliminate clock errors and compensated for the spatial deficiency of single-satellite observation through cumulative time measurement and random terminal switching, thereby optimizing terminal positioning performance. The results show that measurement through random satellite switching, compared to terminals that maintain single-satellite measurement without switching, enhances positioning performance by nearly 100%. By jointly solving multiple observation data over time, the accuracy convergence speed can be increased, and positioning error can be reduced. Within a simulation time of 180 s, using 512 observation data, with a terminal switching frequency of 19 times, the optimal positioning accuracy can reach 299.5 m. |
| format | Article |
| id | doaj-art-c1108edd39b14d5b8a932a943cb34eca |
| institution | Kabale University |
| issn | 1000-0801 |
| language | zho |
| publishDate | 2024-04-01 |
| publisher | Beijing Xintong Media Co., Ltd |
| record_format | Article |
| series | Dianxin kexue |
| spelling | doaj-art-c1108edd39b14d5b8a932a943cb34eca2025-01-15T02:48:27ZzhoBeijing Xintong Media Co., LtdDianxin kexue1000-08012024-04-0140667556705477Bidirectional measurement differential positioning method for LEO communication satellitesWANG XinyangZHAO YafeiLI JinkangPENG MugenIn non-terrestrial network, leveraging resources such as satellite-to-earth links, satellite payloads, and ground terminals of low earth orbit (LEO) communication satellites to achieve positioning calculations is one of the important technical means for realizing the integration of sensing and communication in future 6G network. In scenarios such as direct-to-handset satellite, terminal designs were often configured to communicate with only one satellite, making the exploration of single-satellite positioning methods of urgent significance. Addressing the challenges of poor positioning accuracy, difficulty in clock synchronization, and slow convergence speed associated with previous single-satellite continuous observation, a bidirectional measurement differential positioning method was proposed in the context of low-orbit constellations. Additionally, a position updating strategy based on the satellite position accuracy factor was designed. Utilizing the satellite-to-earth link, the method employed a one-way bidirectional ranging technique to eliminate clock errors and compensated for the spatial deficiency of single-satellite observation through cumulative time measurement and random terminal switching, thereby optimizing terminal positioning performance. The results show that measurement through random satellite switching, compared to terminals that maintain single-satellite measurement without switching, enhances positioning performance by nearly 100%. By jointly solving multiple observation data over time, the accuracy convergence speed can be increased, and positioning error can be reduced. Within a simulation time of 180 s, using 512 observation data, with a terminal switching frequency of 19 times, the optimal positioning accuracy can reach 299.5 m.http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2024092/low earth orbit communication satellitebidirectional measurementsingle-satellite positioningrandom switching |
| spellingShingle | WANG Xinyang ZHAO Yafei LI Jinkang PENG Mugen Bidirectional measurement differential positioning method for LEO communication satellites Dianxin kexue low earth orbit communication satellite bidirectional measurement single-satellite positioning random switching |
| title | Bidirectional measurement differential positioning method for LEO communication satellites |
| title_full | Bidirectional measurement differential positioning method for LEO communication satellites |
| title_fullStr | Bidirectional measurement differential positioning method for LEO communication satellites |
| title_full_unstemmed | Bidirectional measurement differential positioning method for LEO communication satellites |
| title_short | Bidirectional measurement differential positioning method for LEO communication satellites |
| title_sort | bidirectional measurement differential positioning method for leo communication satellites |
| topic | low earth orbit communication satellite bidirectional measurement single-satellite positioning random switching |
| url | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2024092/ |
| work_keys_str_mv | AT wangxinyang bidirectionalmeasurementdifferentialpositioningmethodforleocommunicationsatellites AT zhaoyafei bidirectionalmeasurementdifferentialpositioningmethodforleocommunicationsatellites AT lijinkang bidirectionalmeasurementdifferentialpositioningmethodforleocommunicationsatellites AT pengmugen bidirectionalmeasurementdifferentialpositioningmethodforleocommunicationsatellites |