The Availability of Space Service for Inter-Satellite Links in Navigation Constellations
Global navigation satellite systems (GNSS) are widely used in low Earth orbit (LEO) satellite navigation; however, their availability is poor for users in medium Earth orbits (MEO), and high Earth orbits (HEO). With the increasing demand for navigation from MEO and HEO users, the inadequate coverage...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-08-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/16/8/1327 |
| _version_ | 1798034991494463488 |
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| author | Yinyin Tang Yueke Wang Jianyun Chen |
| author_facet | Yinyin Tang Yueke Wang Jianyun Chen |
| author_sort | Yinyin Tang |
| collection | DOAJ |
| description | Global navigation satellite systems (GNSS) are widely used in low Earth orbit (LEO) satellite navigation; however, their availability is poor for users in medium Earth orbits (MEO), and high Earth orbits (HEO). With the increasing demand for navigation from MEO and HEO users, the inadequate coverage of GNSS has emerged. Inter-satellite links (ISLs) are used for ranging and communication between navigation satellites and can also serve space users that are outside the navigation constellation. This paper aims to summarize their application method and analyze their service performance. The mathematical model of visibility is proposed and then the availability of time division ISLs is analyzed based on global grid points. The BeiDou navigation constellation is used as an example for numerical simulation. Simulation results show that the availability can be enhanced by scheduling more satellites and larger beams, while the presence of more users lowers the availability. The availability of navigation signals will be strengthened when combined with the signals from the ISLs. ISLs can improve the space service volume (SSV) of navigation constellations, and are therefore a promising method for navigation in MEO/HEO spacecraft. |
| first_indexed | 2024-04-11T20:50:59Z |
| format | Article |
| id | doaj.art-6e0cb50218184de5b9e4fbd82b05a72a |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T20:50:59Z |
| publishDate | 2016-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-6e0cb50218184de5b9e4fbd82b05a72a2022-12-22T04:03:50ZengMDPI AGSensors1424-82202016-08-01168132710.3390/s16081327s16081327The Availability of Space Service for Inter-Satellite Links in Navigation ConstellationsYinyin Tang0Yueke Wang1Jianyun Chen2College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, ChinaCollege of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, ChinaCollege of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, ChinaGlobal navigation satellite systems (GNSS) are widely used in low Earth orbit (LEO) satellite navigation; however, their availability is poor for users in medium Earth orbits (MEO), and high Earth orbits (HEO). With the increasing demand for navigation from MEO and HEO users, the inadequate coverage of GNSS has emerged. Inter-satellite links (ISLs) are used for ranging and communication between navigation satellites and can also serve space users that are outside the navigation constellation. This paper aims to summarize their application method and analyze their service performance. The mathematical model of visibility is proposed and then the availability of time division ISLs is analyzed based on global grid points. The BeiDou navigation constellation is used as an example for numerical simulation. Simulation results show that the availability can be enhanced by scheduling more satellites and larger beams, while the presence of more users lowers the availability. The availability of navigation signals will be strengthened when combined with the signals from the ISLs. ISLs can improve the space service volume (SSV) of navigation constellations, and are therefore a promising method for navigation in MEO/HEO spacecraft.http://www.mdpi.com/1424-8220/16/8/1327GNSSinter-satellite linkspace service volumeavailability |
| spellingShingle | Yinyin Tang Yueke Wang Jianyun Chen The Availability of Space Service for Inter-Satellite Links in Navigation Constellations Sensors GNSS inter-satellite link space service volume availability |
| title | The Availability of Space Service for Inter-Satellite Links in Navigation Constellations |
| title_full | The Availability of Space Service for Inter-Satellite Links in Navigation Constellations |
| title_fullStr | The Availability of Space Service for Inter-Satellite Links in Navigation Constellations |
| title_full_unstemmed | The Availability of Space Service for Inter-Satellite Links in Navigation Constellations |
| title_short | The Availability of Space Service for Inter-Satellite Links in Navigation Constellations |
| title_sort | availability of space service for inter satellite links in navigation constellations |
| topic | GNSS inter-satellite link space service volume availability |
| url | http://www.mdpi.com/1424-8220/16/8/1327 |
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