利用SLR检核CHAMP卫星轨道

Evaluation of CHAMP Satellite Orbit with SLR Measurements

初步研究了利用SLR检核CHAMP卫星轨道的方法。采用 2 0 0 2年 1月 1日到 16日的SLR观测数据对GFZ提供的事后科学轨道进行了检核实验 ,实验结果表明 ,GFZ事后科学轨道没有明显的系统偏差 ,其精度优于 10cm。

The technique of evaluating CHAMP satellite orbit with SLR Measurements is presented. As an independent evaluation of the orbit solution, SLR data observed from January 1 to 16,2002 are processed to compute the residuals after fixing the GFZ's post science orbits solutions. The SLR residuals are computed as the differences between the SLR measurements minus the corresponding distances between the SLR station and the GPS-derived orbit positions. Based on the SLR residual analysis, it is found that the accuracy of GFZ's post science orbits is better than 10 cm and that there is no systematic error in GFZ's post science orbits.