Abstract
Satellite optical communication has gained significant attention owing to its
many quality features (e.g., a larger bandwidth, license free spectrum, higher data
rate, and better security) compared to satellite microwave communication. Various
experiments have been performed during many space missions to demonstrate and
characterize inter-satellite links, downlinks, and uplinks. Korea has also planned to
establish an experimental communication system using a geostationary earth orbit (GEO)
satellite and the Geochang station as an optical ground station for low Earth orbit
(LEO)-to-ground optical relay links. In this study, the performance of inter-satellite
communication links and downlinks was investigated for the new Korean experimental
communication system in terms of link margin, bit error rate (BER), and channel
capacity. In particular, the performance of the inter-satellite links was analyzed based
on the receiving apertures and the transmitting power, while that of the downlink was
analyzed in terms of atmospheric turbulence conditions and transmitting power. Finally,
we discussed two system parameters of receiving aperture and transmitting power to meet
the three criteria of link margin, BER, and channel capacity.
Publisher
The Korean Space Science Society
Subject
General Earth and Planetary Sciences,General Physics and Astronomy
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