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| 引用本文： | 李征航,丁文武,李昭.GPS????????????????[J].大地测量与地球动力学,2008,28(1):50-54. |
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| 作者姓名： | 李征航 丁文武 李昭 |
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| 作者单位： | 武汉大学测绘学院,武汉,430079 |
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| 基金项目： | 高等学校博士学科点专项科研基金(20050486040)，国家863计划(2006AA12Z325) |
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| 摘 要： | ??????2002??2006??GPS?????????????仯???????????????????????????? ?????????? ????L-AII???????????????????2006??GPS???????????????2002?????????????
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| 关 键 词： | GPS?????? ???????? ?????? L-AII??? ???????? |
| 文章编号： | 1671-5942（2008）01-0050-05 |
| 收稿时间： | 2007-08-27 |
| 修稿时间： | 2007年8月27日 |
ERROR ANALYSIS OF ORBIT DETERMINED BY GPS BROADCAST EPHEMERIS |
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| Li Zhenghang,Ding Wenwu,Li Zhao.ERROR ANALYSIS OF ORBIT DETERMINED BY GPS BROADCAST EPHEMERIS[J].Journal of Geodesy and Geodynamics,2008,28(1):50-54. |
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| Authors: | Li Zhenghang Ding Wenwu Li Zhao |
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| Institution: | School of Geodesy and Geomatics, Wuhan University, Wuhan 430079 |
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| Abstract: | The variations of orbit error of GPS broadcast ephemeris from 2002 to 2006 are analyzed, and some effects on the orbit accuracy are discussed.The results show that the orbit accuracy of GPS broadcast ephemeris in 2006 was much better than that in 2002 especially after the implementation of L-AII project. |
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| Keywords: | GPS broadcast ephemeris precise ephemeris orbit error L-AII project root mean square error |
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