Comparison between several satellite constellation schemes for MEO-TDRSS of China

The satellite constellation classes,which are suitable for the medium earth orbit tracking and data relay satellite system (MEO-TDRSS) of China,are investigated.On the basis of the functionality and the traffic distribution characteristic of MEO-TURSS,the coverage performance and inter-satellite link properties of four different constellation schemes are compared by simulations.Simulation results indicate that the rosette and common-track constellations,whose satellites are distributed on the celestial sphere more uniformly,are appropriate for the implementation of MEO-TDRSS of China.