| EGM96和EGM2008地球重力场模型计算弹道扰动引力的比较 |
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| 引用本文： | 刘晓刚,吴晓平,赵东明,吴星.EGM96和EGM2008地球重力场模型计算弹道扰动引力的比较[J].大地测量与地球动力学,2009,29(5). |
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| 作者姓名： | 刘晓刚 吴晓平 赵东明 吴星 |
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| 作者单位： | 1. 解放军信息工程大学测绘学院,郑州,450052
2. 解放军信息工程大学测绘学院,郑州,450052;63926部队,北京,100085 |
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| 基金项目： | 国家自然科学基金，卫星导航与定位教育部重点实验室(B类)开放基金，全国优秀博士论文专项基金，中国科学院动力大地测量学重点实验室开放基金，解放军信息工程大学博士生创新基金，航天一院项目资金 |
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| 摘 要： | 给出了利用地球重力场模型计算扰动引力以及重力场模型截断误差的公式,计算了36阶、360阶、2 160阶地球重力场模型在径向和水平方向的截断误差,并对36阶、360阶的EGM96和EGM2008重力场模型计算的弹道扰动引力矢量进行了分析和比较.结果表明,采用重力场模型计算扰动引力时,模型阶数和弹道点的高度越低,模型截断误差越大;EGM96和EGM2008模型的一致性随着模型阶数的升高而逐渐降低.总体来看,EGM2008模型的精度要好于EGM96模型.
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| 关 键 词： | 弹道扰动引力 地球重力场模型 球谐函数 |
COMPARISON BETWEEN TRAJECTORY DISTURBING GRAVITY CALCULATED WITH EARTH GRAVITY FIELD MODELS OF EGM96 AND EGM2008 |
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| Liu Xiaogang,Wu Xiaoping,Zhao Dongming , Wu Xing,Institute of Surveying , Mapping,Information , Engineering University,Zhengzhou Troops,Beijing.COMPARISON BETWEEN TRAJECTORY DISTURBING GRAVITY CALCULATED WITH EARTH GRAVITY FIELD MODELS OF EGM96 AND EGM2008[J].Journal of Geodesy and Geodynamics,2009,29(5). |
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| Authors: | Liu Xiaogang Wu Xiaoping Zhao Dongming Wu Xing Institute of Surveying Mapping Information Engineering University Zhengzhou Troops Beijing |
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| Institution: | Liu Xiaogang1),Wu Xiaoping1),Zhao Dongming1) , Wu Xing1,2)1)Institute of Surveying , Mapping,Information , Engineering University,Zhengzhou 450052 2)63926 Troops,Beijing 100085) |
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| Abstract: | The formulas which are used to calculate the disturbing gravity and the model truncation error are given,and the truncation errors of the Earth gravity field models of 36 degree,360 degree,and 2 160 degree are calculated in the radial and horizontal directions,and the trajectory disturbing gravity vectors,which are calculated with the Earth gravity field models of EGM96 and EGM2008 of 36 degree and 360 degree,are analyzed and compared.The results show that when using the Earth gravity field model to calcula... |
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| Keywords: | EGM96 EGM2008 |
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