A placement method of ground stations for optical satellite communications considering cloud attenuation
2023 年 12 巻 10 号 p. 568-571
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2023 年 12 巻 10 号 p. 568-571
This letter studies a placement method of optical ground stations (OGSs) to realize site diversity in optical satellite-to-ground communications under cloud attenuation. Using a meteorological ERA-Interim database, the monthly average cloud attenuation over Japan during 2018-2022 is calculated. Based on the obtained results, a set of candidates for the OGS is proposed, including places with the lowest attenuation, major cities, and a JAXA observatory station. Then, a greedy heuristic method is presented to determine a sub-optimal set of OGSs. Simulation results reveal that sufficiently high system availabilities are achieved when site diversity is performed from the proposed set of candidates.
