ERROR ANALYSIS OF ORBIT DETERMINED BY GPS BROADCAST EPHEMERIS
GPS广播星历的轨道误差分析

The variations of orbit error of GPS broadcast ephemeris from 2002 to 2006 are analyzed, and some effects on the orbit accuracy are discussed.The results show that the orbit accuracy of GPS broadcast ephemeris in 2006 was much better than that in 2002 especially after the implementation of L-AII project.