利用地面测轨资料拟合GPS广播星历

THE FITTING OF GPS EPHEMERIS WITH TRACKING DATA

本文对GPS广播星历进行了系统的分析,讨论了GPS广播星历的拟合计算方法,导出了其解算公式,通过实际数据验证了公式及方法的正确性;对于广播星历拟合过程中可能出现的问题,给出了解决方法。

Based on the systematic analysis of the GPS broadcast ephameris, the fitting algorithm of the ephemeris is studied, and the mathematical models are derived. The correctness of the formulae and the algorithm is vevrifiedby real datum. Some solutions of the problems which mayarise in fitting process of the broadcast ephemeris are given.