Data relay system data download scheduling algorithm for earth observation satellites

The earth observation satellite has been designed to have powerful ability, which produce huge amount of data. The traditional ground station data receiving system can hardly fulfill the demand of all kinds of terminal users, and the data relay system based on geostationary satellite gradually becomes a considerable solution. This paper proposes a greedy strategy based on-line scheduling algorithm for geostationary data relay system to schedule earth observation data download, which considers a trade-off among throughput, fairness, and the quality of service.