基于STK的双层卫星星座设计及仿真

轨道与星座的设计是整个卫星通信系统设计的基础,合理的轨道设计与星座配置方案可以显著提高系统的整体性能。结合GEO卫星处理能力强,LEO卫星星地时延小的特点,以提供全球实时接入为目标,提出了一种由LEO卫星提供全球覆盖的GEO/LEO双层卫星网络星座设计方案。运用卫星覆盖带分析方法,确定由48颗LEO卫星完成全球覆盖。通过在STK仿真环境下进行计算机仿真验证,得到所设计的卫星星座可完成全天时全球覆盖。

Design and Simulation of Double-layer Satellite Constellation Based on STK

The design of satellite orbit and constellation is the basis for satellite communication system,an effective scheme can improve the whole performance of the system remarkably.This paper presents a global-covered constellation design scheme of GEO/LEO double-layer satellite network that combines GEO satellite＇s strong processing capability with LEO satellite＇s low transmission delay,aiming at providing global real-time access.The design achieves global coverage with 48 LEO satellites by means of Street of Coverage.With computer simulation based on STK,the results show that the constellation can provide real-time and global coverage.