利用SLR数据进行广播星历精度评估

论述了利用SLR观测数据进行广播星历精度评估的原理、方法及计算模型。通过理论分析及对比试算,得出该方法所能达到的精度为0.03 m,与微波观测数据计算结果存在近50 mm的系统差,验证了方法的可行性。该方法为广播星历精度评估提供了独立的外部检核条件,克服了利用精密星历评估必须事后进行的缺点,达到了实时处理的效果。采用2005年SLR观测数据对GPS 35卫星广播星历精度进行了实测数据评估,给出了有益的结论。

Validating Satellite Broadcast Ephemeris by SLR Data

The theories,methods and calculating models for validating satellite broadcast ephemeris by using SLR data are presented in this paper.From the theoretical analysis and the contrastive calculations,the precision of this method can reach 0.03 m,with 50 mm system difference between SLR and microwave observation calculated results,whose feasibility is assessed.An absolutely external checking condition is provided.The disadvantage of validating using precise ephemeris which must be calculated after the observation is conquered.It can reach the purpose of real time evaluation.The precise of GPS 35 broadcast ephemeris is validated by using the SLR data of 2005.Some useful conclusions are presented.