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| 引用本文： | 王建强,李建成,赵国强,徐效波.?????????????????????????[J].大地测量与地球动力学,2013,33(4):52-55. |
| 作者姓名： | 王建强 李建成 赵国强 徐效波 |
| 作者单位： | 1. 东华理工大学测绘工程学院,抚州,344000 2. 武汉大学测绘学院,武汉,430079 3. 中国地震局地震预测研究所GPS中心,北京,100036 |
| 基金项目： | 国家自然科学基金，江西省教育厅青年基金，东华理工大学博士科研启动基金，地球空间环境与大地测量教育部重点实验室开放基金，江西省教育厅科研规划重点项目，江西省自然科学基金 |
| 摘 要： | ???ó??????????????EGM2008???????ι?????????????÷?ζ??????????????????????????????????????????η???????????????????????????????洢???????????????????????÷?ζ??????????????????????????????????????3??????????????洢??????100?????????? |
| 关 键 词： | ??????? ???????? ??? ??? ????????? |
FAST CALCULATION OF EARTH'S DISTURBING GRAVITY THROUGH POLYNOMIAL FITTING |
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| Wang Jianqiang;Li Jiancheng;Zhao Guoqiang;Xu Xiaobo.FAST CALCULATION OF EARTH'S DISTURBING GRAVITY THROUGH POLYNOMIAL FITTING[J].Journal of Geodesy and Geodynamics,2013,33(4):52-55. | |
| Authors: | Wang Jianqiang;Li Jiancheng;Zhao Guoqiang;Xu Xiaobo |
| Institution: | Wang Jianqiang;Li Jiancheng;Zhao Guoqiang;Xu Xiaobo;Faculty of Geomatics,East China Institute of Technology;School of Geodesy and Geomatics,Wuhan University;Institute of Earthquake Science,China Earthquake Administration; |
| Abstract: | An orbit gravity field was simulated through the EGM2008 with ultra??high??degree, and then the gravity field was approximated by polynomial fitting with divided segmentation of the orbit. According to the different segmentations and polynomial fittings, a test was done which focuses on the precision, data storage and calculation speed of the polynomial fitting. The results show that: comparing with traditional methods, the computing speed of the orbit gravity field by the segmentation polynomial fitting approximation improves 3 orders of magnitude, and data storage is less than 100 floating point numbers. |
| Keywords: | disturbing gravity polynomial fitting divided segmentation speed orbit gravity field |
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