Abstract：Regional mobile satellite communication systems are very important for developing countries, especially for China that lacks the basic communication methods in her large rural areas. Adopting Medium Earth Orbit (MEO) constellation is an effective way for this situation Time-dependent constellation for the regional mobile satellite communication systems is proposed in this paper. The constellation can provide excellent coverage performance for special territory, and the system service provided by the constellation can be time-limited and nontime-limited. The constellation schemes (time-limited and non-time-limited) of the economical mobile satellite communication system for China designed with this method are proposed in this paper, and they also can provide excellent service for United States.
2000, Vol. 22 
