Acquisition Time in Laser Inter-Satellite Link Under Satellite Vibrations
Pointing, acquisition, and tracking (PAT) is a major technical challenge of laser inter-satellite links (ISLs). For the fast establishment of laser link and the maximization of communication time, it is of importance to minimize the acquisition time. Satellite vibrations affect the PAT procedure adv...
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IEEE
2023-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/10171981/ |
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| author | Kwanyong Lee Vuong Mai Hoon Kim |
| author_facet | Kwanyong Lee Vuong Mai Hoon Kim |
| author_sort | Kwanyong Lee |
| collection | DOAJ |
| description | Pointing, acquisition, and tracking (PAT) is a major technical challenge of laser inter-satellite links (ISLs). For the fast establishment of laser link and the maximization of communication time, it is of importance to minimize the acquisition time. Satellite vibrations affect the PAT procedure adversely, and thus serve to increase the acquisition time. In this paper, we investigate through theoretical analysis the average acquisition time of laser ISLs in the presence of satellite vibrations. The analytic expression about the time taken from the beginning of spiral scan to the acquisition of the scan beam is provided in the presence of the pointing errors caused by vibrations. We also derive the optimum beam divergence angle for the acquisition time. The analyses are validated by Monte-Carlo computer simulations and a proof-of-concept experiment. The results show that the acquisition time can be minimized by adjusting the beam divergence angle adaptively to the link conditions. |
| format | Article |
| id | doaj-art-b06601b5d9dc49dc986ac213c84c39bf |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-b06601b5d9dc49dc986ac213c84c39bf2025-08-20T03:32:55ZengIEEEIEEE Photonics Journal1943-06552023-01-011541910.1109/JPHOT.2023.329180710171981Acquisition Time in Laser Inter-Satellite Link Under Satellite VibrationsKwanyong Lee0https://orcid.org/0000-0002-7448-5544Vuong Mai1https://orcid.org/0000-0002-3309-0239Hoon Kim2https://orcid.org/0000-0001-7395-3695School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South KoreaFaculty of Engineering and Informatics, University of Bradford, Bradford, U.K.School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South KoreaPointing, acquisition, and tracking (PAT) is a major technical challenge of laser inter-satellite links (ISLs). For the fast establishment of laser link and the maximization of communication time, it is of importance to minimize the acquisition time. Satellite vibrations affect the PAT procedure adversely, and thus serve to increase the acquisition time. In this paper, we investigate through theoretical analysis the average acquisition time of laser ISLs in the presence of satellite vibrations. The analytic expression about the time taken from the beginning of spiral scan to the acquisition of the scan beam is provided in the presence of the pointing errors caused by vibrations. We also derive the optimum beam divergence angle for the acquisition time. The analyses are validated by Monte-Carlo computer simulations and a proof-of-concept experiment. The results show that the acquisition time can be minimized by adjusting the beam divergence angle adaptively to the link conditions.https://ieeexplore.ieee.org/document/10171981/Free space optical communicationsinter-satellite linksPATspatial acquisition |
| spellingShingle | Kwanyong Lee Vuong Mai Hoon Kim Acquisition Time in Laser Inter-Satellite Link Under Satellite Vibrations IEEE Photonics Journal Free space optical communications inter-satellite links PAT spatial acquisition |
| title | Acquisition Time in Laser Inter-Satellite Link Under Satellite Vibrations |
| title_full | Acquisition Time in Laser Inter-Satellite Link Under Satellite Vibrations |
| title_fullStr | Acquisition Time in Laser Inter-Satellite Link Under Satellite Vibrations |
| title_full_unstemmed | Acquisition Time in Laser Inter-Satellite Link Under Satellite Vibrations |
| title_short | Acquisition Time in Laser Inter-Satellite Link Under Satellite Vibrations |
| title_sort | acquisition time in laser inter satellite link under satellite vibrations |
| topic | Free space optical communications inter-satellite links PAT spatial acquisition |
| url | https://ieeexplore.ieee.org/document/10171981/ |
| work_keys_str_mv | AT kwanyonglee acquisitiontimeinlaserintersatellitelinkundersatellitevibrations AT vuongmai acquisitiontimeinlaserintersatellitelinkundersatellitevibrations AT hoonkim acquisitiontimeinlaserintersatellitelinkundersatellitevibrations |