中文摘要：

分析GPS新型卫星BlockⅡF广播星历的单天、短期轨道误差及钟差。结果表明,BlockⅡF卫星广播星历轨道精度在径向、切向、法向分别优于0.6m、1.2m、0.4m,其三维位置误差精度在1.0m左右,钟差精度优于4ns,明显优于BlockⅡA卫星。同时发现,广播星历钟差与空间信号测距误差呈很强的负相关,是影响广播星历精度的重要因子。从空间信号测距误差看,当前GPS广播星历整体精度达到1.8m左右。

英文摘要：

Errors on orbit and clock of GPS BlockⅡF satellite broadcast ephemeris are analyzed from different perspectives. The results show that the orbit accuracy of Block ⅡF satellite in the radial, a- long-track and cross-track are less than 0.6 m, 1.2 m, 0.4 m respectively, three-dimensional position errors are 1.0 m or so, clock errors less than 4 ns, and signal-in-space range error （SISRE） is less than 1.8 m, which is obviously superior to Block ⅡA satellite. Meanwhile, a very strong negative correlation is also found between clock error and signal-in-space range error. Compared with 2009, the accuracy of the broadcast ephemeris errors are improved.