共地面轨迹移动卫星通信星座设计

Design of the Mobile Satellite Communications Constellations with Common Ground Track

本文从移动卫星地面轨迹的特点出发研究了一种共地面轨迹移动卫星星座的设计方法，并借助于计算机模拟和专业卫星通信工具软件对我国区域进行了设计，在选定轨道周期为1／4个恒星日，偏心率为0．158，轨道倾角为63．4°的情况下，4颗共地面轨迹卫星即可对我国大陆（北纬20°至55°）基本达到连续覆盖，平均仰角大于48°．

This paper, from the characteristics of the mobile satellite ground track, discusses a design method of mobile satellite constellations with common ground track, and also uses the method on the China area design by computer simulation and specialized satellite communication tool. By choosing the satellite orbit period as one fourth of the sidereal day, the eccentricity as 0. 158, the orbital plane inclination as 63 .4 degrees,ouly four satellites with common ground track can cover China mainland almost almos seamlessly,while the average elevation angle is greater than 50 degrees.