CHAMP卫星cm级精密定轨
Precision Orbit Determination of CHAMP Satellite with cm-level Accuracy
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摘要: 在卫星定位导航数据综合处理软件(PANDA软件)的基础上,解算了2002年年积日126~131 dCHAMP卫星的精密轨道,并通过与GFZ精密轨道的比较、GPS观测值的验后残差和SLR观测值检验等3种方式进行了轨道精度的评估。结果显示,本文的轨道精度在径向为4~5 cm,切向和法向为6~8 cm。Abstract: The precision orbit determination of CHAMP satellite was done through PANDA(position and navigation data analyze) software,using the onboard GPS data from day 126 to 131 of year 2002.The orbit accuracy is assessed by analyzing the difference from GFZ precision orbits,the data residuals and the satellite laser ranging(SLR) residuals.The comparison results show that the accuracy of the orbits obtained is 4-5 cm in radial and 6-8 cm along and across the track.
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