Galileo系统在空间飞行器定位中的应用

The application of galileo system on spacecraft positioning

欧洲的Galileo系统将在2008年建成,届时它将与美国的GPS系统相互补充。在对Galileo系统导航星座轨道和信号结构分析的基础上,结合各种不同轨道高度的空间飞行器用户的动态特点,推导了用户卫星接收天线的可见可用性模型,建立了基于Galileo坐标系统(ITRF 96)的高动态定位算法模型,针对实际航天工程任务的LEO和GEO卫星进行了定位仿真,为Galileo系统在空间领域的实际应用打下了基础。

The European Galileo system will be set up in 2008,which is the counterpart of the GPS.Based on the analysis of Galileo system satellite constellation and signal structure,the high-dynamic position determination model was listed for spacecraft,which included LEO and GEO user satellite.According to the Galileo satellite orbit and signal design,the simulation,statistics and analysis were completed deeply.This algorithm aims at the actual space mission project and has the actual availability value.