万丽华,陈文建,高长胤,黄宝森

• 1:武汉大学测绘学院
• 2:中国科学院遥感与数字地球研究所

摘要(Abstract)：

随着星载GPS接收机性能和精密轨道、钟差产品精度的提高,星载GPS观测技术已成为确定CHAMP、GRACE和GOCE等低轨卫星精密轨道的重要手段。文章以GRACE卫星为例,分别利用非差弱动力法和非差运动学方法精密确定其轨道,并将结果和美国喷气动力实验室(JPL)事后精密轨道对比。结果表明:GRACE卫星非差弱动力法和非差运动学定轨精度均可达到厘米级;在使用相同的星历、钟差等产品时,弱动力法定轨精度略微优于运动学方法。此外,本文采用超快预报精密星历实时确定GRACE卫星轨道时精度也优于10cm。

关键词(KeyWords)： 星载GPS;LEO卫星;弱动力法;运动学法;精密定轨

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 万丽华,陈文建,高长胤,黄宝森

DOI: 10.16251/j.cnki.1009-2307.2017.01.006

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