| Accuracy Analysis for SST Gravity Field Model in China |
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| 作者姓名： | LUO Jia LUO Zhicai ZOU Xiancai WANG Haihong |
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| 作者单位： | [1]School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China [2]不详, Wuhan University, 129 Luoyu Road, Wuhan 430079, China |
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| 摘 要： | IntroductionThe high-accauary and high-resolution Earth’sgravity field can be recovered with satellite-to-satellite tracking (SST) technique , the preciseintersatellite tracking technique . The SSTtech-nique has been studied since 1960’s . The modesof S…
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| 关 键 词： | SST 重力场 中国 卫星 物理大地测量 |
| 文章编号： | 1009-5020（2006）04-265-04 |
| 收稿时间： | 2005-12-12 |
Accuracy analysis for SST gravity field model in China |
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| LUO Jia LUO Zhicai ZOU Xiancai WANG Haihong.Accuracy Analysis for SST Gravity Field Model in China[J].Geo-Spatial Information Science,2006,9(4):265-268. |
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| Authors: | Luo Jia PhD Luo Zhicai Zou Xiancai Wang Haihong |
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| Institution: | LUO Jia LUO Zhicai ZOU Xiancai WANG Haihong |
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| Abstract: | Taking China as the region for test, the potential of the new satellite gravity technique, satellite-to-satellite tracking for improving the accuracy of regional gravity field model is studied. With WDM94 as reference, the gravity anomaly residuals of three models, the latest two GRACE global gravity field model (EIGEN_GRACE02S, GGM02S) and EGM96, are computed and compared. The causes for the differences among the residuals of the three models are discussed. The comparison between the residuals shows that in the selected region, EIGEN_GRACE02S or GGM02S is better than EGM96 in lower degree part (less than 110 degree). Additionally, through the analysis of the model gravity anomaly residuals, it is found that some systematic errors with periodical properties exist in the higher degree part of EIGEN and GGM models, the results can also be taken as references in the validation of the SST gravity data. |
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| Keywords: | SST gravity field CHAMP GRACE China |
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