| 中国区域SST卫星重力场模型精度分析 |
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| 引用本文： | 罗佳,姜卫平,汪海洪,邹贤才.中国区域SST卫星重力场模型精度分析[J].武汉大学学报(信息科学版),2006,31(3):199-202. |
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| 作者姓名： | 罗佳 姜卫平 汪海洪 邹贤才 |
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| 作者单位： | 1. 武汉大学测绘学院,武汉市珞喻路129号,430079
2. 武汉大学GPS工程技术研究中心,武汉市珞喻路129号,430079 |
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| 基金项目： | 中国科学院资助项目;高等学校博士学科点专项科研项目 |
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| 摘 要： | 通过比较最新SST地球重力场模型EIGEN_GRACE02S、GGM02S和EGM96模型在中国区域与WDM94模型重力异常残差的差异，分析差异产生的原因及分布，研究新一代卫星重力方法对于提高区域重力场模型精度的潜力以及存在的问题。结果证明，卫星跟踪卫星方法对于现有模型中低阶部分有明显改善。
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| 关 键 词： | 卫星跟踪卫星 重力场 |
| 文章编号： | 1671-8860(2006)03-0199-04 |
| 修稿时间： | 2005年12月25 |
Precision Analysis of SST Gravity Field Model in China |
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| LUO Jia,JIANG Weiping,WANG Haihong,ZOU Xiancai.Precision Analysis of SST Gravity Field Model in China[J].Geomatics and Information Science of Wuhan University,2006,31(3):199-202. |
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| Authors: | LUO Jia JIANG Weiping WANG Haihong ZOU Xiancai |
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| Abstract: | In this paper,with China as the region in test,the potential of the new satellite gravity technique,satellite-to-satellite tracking,to improve the precision 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 models(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).From the analysis of the model gravity anomaly residuals,it is found that some systematic errors with periodical properties exist in the higher part of EIGEN and GGM models.The results of the paper can also be taken as references in the validation of the SST gravity data. |
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| Keywords: | GRACE |
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