Instantaneous velocity determination and positioning using Doppler shift from a LEO constellation
Abstract To provide backup and supplementation for the Global Navigation Satellite System (GNSS), Doppler shift from Low Earth Orbit (LEO) satellites can be used as signals of opportunity to provide positioning, navigation, and timing service. In this contribution, we first investigate the model and...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-03-01
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| Series: | Satellite Navigation |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s43020-023-00098-2 |
| _version_ | 1827982449979686912 |
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| author | Fei Guo Yan Yang Fujian Ma Yifan Zhu Hang Liu Xiaohong Zhang |
| author_facet | Fei Guo Yan Yang Fujian Ma Yifan Zhu Hang Liu Xiaohong Zhang |
| author_sort | Fei Guo |
| collection | DOAJ |
| description | Abstract To provide backup and supplementation for the Global Navigation Satellite System (GNSS), Doppler shift from Low Earth Orbit (LEO) satellites can be used as signals of opportunity to provide positioning, navigation, and timing service. In this contribution, we first investigate the model and performance of instantaneous velocity determination and positioning with LEO satellites. Given a LEO constellation with 288 satellites, we simulate Doppler shift observations at nine multi-GNSS experiment stations. Owing to the lower orbit, the performance of LEO velocity determination is much more sensitive to the initial receiver position error than that of GNSS. Statistical results show that with the initial receiver position error increased from 0.1 to 10 m, the Root Mean Square Errors (RMSEs) increase from 0.73 to 2.65 cm/s, 0.68 to 2.96 cm/s, and 1.67 to 4.15 cm/s in the east, north, and up directions, respectively. The performances with GPS are compared with GPS + LEO, and it is found that LEO Doppler shift observations contribute to GPS velocity determination. As for LEO Doppler positioning, even if more than 30 visible LEO satellites are available, the position dilution of precision values can reach several hundreds. Assuming that the error of LEO Doppler measurements is 0.01 m/s, the instantaneous Doppler positioning accuracy can achieve about a few meters, which is comparable to that of GNSS pseudorange positioning. A constant velocity model is adopted for state transition. Static LEO Doppler positioning results show that an accuracy at centimeter to decimeter level can be achieved after solution convergence. For a static simulated kinematic positioning test, the RMSEs range from a few decimeters to several meters in different regions by giving different constraints. For a dynamic positioning test, the RMSEs are about 2–3 m in high latitude region. |
| first_indexed | 2024-04-09T22:34:21Z |
| format | Article |
| id | doaj.art-d37b80dd1d6d46e4af6a3ca65415c1fe |
| institution | Directory Open Access Journal |
| issn | 2662-9291 2662-1363 |
| language | English |
| last_indexed | 2024-04-09T22:34:21Z |
| publishDate | 2023-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Satellite Navigation |
| spelling | doaj.art-d37b80dd1d6d46e4af6a3ca65415c1fe2023-03-22T12:37:36ZengSpringerOpenSatellite Navigation2662-92912662-13632023-03-014111310.1186/s43020-023-00098-2Instantaneous velocity determination and positioning using Doppler shift from a LEO constellationFei Guo0Yan Yang1Fujian Ma2Yifan Zhu3Hang Liu4Xiaohong Zhang5School of Geodesy and Geomatics, Wuhan UniversitySchool of Geodesy and Geomatics, Wuhan UniversityInstitute of Telecommunication and Navigation Satellites, China Academy of Space TechnologySchool of Geodesy and Geomatics, Wuhan UniversitySchool of Geodesy and Geomatics, Wuhan UniversitySchool of Geodesy and Geomatics, Wuhan UniversityAbstract To provide backup and supplementation for the Global Navigation Satellite System (GNSS), Doppler shift from Low Earth Orbit (LEO) satellites can be used as signals of opportunity to provide positioning, navigation, and timing service. In this contribution, we first investigate the model and performance of instantaneous velocity determination and positioning with LEO satellites. Given a LEO constellation with 288 satellites, we simulate Doppler shift observations at nine multi-GNSS experiment stations. Owing to the lower orbit, the performance of LEO velocity determination is much more sensitive to the initial receiver position error than that of GNSS. Statistical results show that with the initial receiver position error increased from 0.1 to 10 m, the Root Mean Square Errors (RMSEs) increase from 0.73 to 2.65 cm/s, 0.68 to 2.96 cm/s, and 1.67 to 4.15 cm/s in the east, north, and up directions, respectively. The performances with GPS are compared with GPS + LEO, and it is found that LEO Doppler shift observations contribute to GPS velocity determination. As for LEO Doppler positioning, even if more than 30 visible LEO satellites are available, the position dilution of precision values can reach several hundreds. Assuming that the error of LEO Doppler measurements is 0.01 m/s, the instantaneous Doppler positioning accuracy can achieve about a few meters, which is comparable to that of GNSS pseudorange positioning. A constant velocity model is adopted for state transition. Static LEO Doppler positioning results show that an accuracy at centimeter to decimeter level can be achieved after solution convergence. For a static simulated kinematic positioning test, the RMSEs range from a few decimeters to several meters in different regions by giving different constraints. For a dynamic positioning test, the RMSEs are about 2–3 m in high latitude region.https://doi.org/10.1186/s43020-023-00098-2Low earth orbit (LEO)GNSSDoppler shiftVelocity determinationInstantaneous Doppler positioning |
| spellingShingle | Fei Guo Yan Yang Fujian Ma Yifan Zhu Hang Liu Xiaohong Zhang Instantaneous velocity determination and positioning using Doppler shift from a LEO constellation Satellite Navigation Low earth orbit (LEO) GNSS Doppler shift Velocity determination Instantaneous Doppler positioning |
| title | Instantaneous velocity determination and positioning using Doppler shift from a LEO constellation |
| title_full | Instantaneous velocity determination and positioning using Doppler shift from a LEO constellation |
| title_fullStr | Instantaneous velocity determination and positioning using Doppler shift from a LEO constellation |
| title_full_unstemmed | Instantaneous velocity determination and positioning using Doppler shift from a LEO constellation |
| title_short | Instantaneous velocity determination and positioning using Doppler shift from a LEO constellation |
| title_sort | instantaneous velocity determination and positioning using doppler shift from a leo constellation |
| topic | Low earth orbit (LEO) GNSS Doppler shift Velocity determination Instantaneous Doppler positioning |
| url | https://doi.org/10.1186/s43020-023-00098-2 |
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