| 应用GPS水准与重力数据联合解算大地水准面 |
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| 引用本文： | 郭东美,许厚泽. 应用GPS水准与重力数据联合解算大地水准面[J]. 武汉大学学报(信息科学版), 2011, 0(5): 621-624 |
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| 作者姓名： | 郭东美 许厚泽 |
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| 作者单位： | 中国科学院测量与地球物理研究所;中国科学院动力大地测量学重点实验室;中国科学院研究生院; |
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| 基金项目： | 国家自然科学基金资助项目(40874013,90814009,40704005) |
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| 摘 要： | GPS水准大地水准面与重力大地水准面之差不仅由基准不同引起,而且也包含重力与GPS水准观测值的误差。建立了这两个水准面之差与基准转换参数、重力和GPS水准观测值的残差之间的关系,并基于最小二乘准则解算了基准转换参数和重力与GPS水准观测值的残差,即计算转换参数及重力与GPS观测值的改正。尤其当GPS水准精度远高于重力水准面时,联合解算模型可固定GPS水准大地水准面,只对重力观测值进行改正。
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| 关 键 词： | 大地水准面模型 GPS水准 联合解算 精度分析 |
Determination of Geoid Using GPS Leveling and Gravity Data |
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| GUO Dongmei,, XU Houze. Determination of Geoid Using GPS Leveling and Gravity Data[J]. Geomatics and Information Science of Wuhan University, 2011, 0(5): 621-624 |
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| Authors: | GUO Dongmei XU Houze |
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| Affiliation: | GUO Dongmei1,2,3 XU Houze1,2(1 Institute of Geodesy and Geophysics,Chinese Academy of Sciences,340 Xudong Street,Wuhan 430077,China)(2 Key Laboratory of Dynamical Geodesy,Institute of Geodesy and Geophysics,China)(3 School of Graduate,A19 Yuquan Road,Shijingshan District,Beijing 100049,China) |
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| Abstract: | The difference between GPS leveling and gravity geoid is causedlies in by not only the different datums that they refer to respectively,but also the errors inevitably contained in the gravity and GPS leveling observations.The relationship between the transformation parameters of datums and the difference of these two observation technologies is established,and the parameters and residuals are calculated based on the least-square criterion.When GPS leveling data is more accuracy than gravity data,the geoid c... |
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| Keywords: | geoid model GPS leveling combined solution accuracy analysis |
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