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| 引用本文： | 陈俊平,王解先.?????????????????????????????[J].大地测量与地球动力学,2007,27(4):57-61. |
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| 作者姓名： | 陈俊平 王解先 |
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| 作者单位： | 1. 同济大学测量与国土信息工程系,上海,200092;GeoForschungsZentrum Potsdam,14473,Potsdam,Germany
2. 同济大学测量与国土信息工程系,上海,200092;现代工程测量国家测绘局重点实验室,上海,200092 |
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| 基金项目： | 国家自然基金重点项目(40234039) |
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| 摘 要： | ????????λPPP?????????????????ù???????????????????????????? ???????????????????????????????????????????????????????????????????????????????????????о????н??????? ????????????CHAMP??RACE????????????????????ο?????????????CHAMP???????????ο??????XYZ3?????????????????????0.22 m??0.22 m??0.25 m???????????????0.41 m??GRACE??A??????????????ο??????XYZ 3?????????????????????0.27 m??0.23 m??0.29 m???????????????0.45 m??
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| 关 键 词： | GPS CHAMP GRACE ??????? ??????????? |
| 文章编号： | 1671-5942（2007）04-0057-06 |
| 修稿时间： | 2007-02-05 |
KINEMATIC PRECISE ORBIT DETERMINATION OF LOW EARTH ORBITER BASED ON EPOCH-DIFFERENCE STRATEGY |
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| Chen Junping,Wang Jiexian.KINEMATIC PRECISE ORBIT DETERMINATION OF LOW EARTH ORBITER BASED ON EPOCH-DIFFERENCE STRATEGY[J].Journal of Geodesy and Geodynamics,2007,27(4):57-61. |
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| Authors: | Chen Junping Wang Jiexian |
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| Institution: | 1. Department of Surveying and Geomatics , Tongji University, Shanghai 200092 ; 2. GeoForschungsZentrum Potsdam, 14473, Potsdam, Germany; 3.Key Laboratory of Modern Engineering Surveying, State Bureau of Surveying and Mapping, Shanghai 20092 |
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| Abstract: | On the basis of the theory of Precise Point Positioning (PPP), a kinematic algorithm ——POD(Precise Orbiter Determination) based on an epoch wise processing of the code observations combined with an epoch-differece processing of the phase observations is introduced. The method allows recovering the trajectory of the LEO without making use of any a priori dynamic perturbation, e.g., gravity field information and air drag, it may be very useful for gravity field recovery. Experiments with CHAMP and GRACE observations over a period of 2 weeks show that kinematic orbits of CHAMP have an average 3D RMS about 0.41m comparing to reference orbits, while the average 3D RMS of GRACE is 0.45 m,the average RMS of the 3 axes component (0.22,0.22,0.25) m are of CHAMP and (0.27,0.23,0.29) m of GRACE. |
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| Keywords: | GPS CHAMP GRACE low earth orbiter kinematic POD(Precise Orbiter Determination) |
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