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Study on Using GPS Pseudorange Data to Assess the Precision of Broadcast Ephemeris
Author(s): 
Pages: 5-8
Year: Issue:  3
Journal: HYDROGRAPHIC SURVEYING AND CHARTING

Keyword:  全球定位系统伪距观测量广播星历精度;
Abstract: 论述了GPS监测站伪距观测量评定广播星历精度的基本方法.同时,分析并计算得出:利用GPS监测站载波相位观测量平滑伪距能明显提高伪距观测量评定广播星历的精度.采用2004年7月19日拉萨站伪距观测量对IGS提供的广播星历的精度进行了评定,实验结果表明,广播星历提供的卫星轨道精度从总体上达到3m左右.
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