| 利用EGM2008模型与加权组合模型进行高程异常拟合 |
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| 引用本文： | 罗陶荣,王中元,梁宁,马效申.利用EGM2008模型与加权组合模型进行高程异常拟合[J].测绘通报,2018,0(1):28-32. |
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| 作者姓名： | 罗陶荣 王中元 梁宁 马效申 |
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| 作者单位： | 1. 中国矿业大学环境与测绘学院, 江苏 徐州 221116;
2. 绍兴市城市规划测绘院, 浙江 绍兴 312000 |
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| 基金项目： | 国家自然科学基金，国家重点研发计划课题 |
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| 摘 要： | 高程异常拟合是GPS高程测量应用于实际工作的重要技术手段，高精度地求解高程异常是技术关键。本文提出了顾及EGM2008重力场模型的高程异常拟合方法，通过EGM2008重力场模型计算高程异常长波项，并对剩余高程异常利用加权组合模型进行拟合。通过江苏省某市的实测数据验证顾及EGM2008重力场模型的加权组合模型拟合方法。结果表明，该方法的精度达到了厘米级，高程异常拟合效果最大提升了30%。
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| 关 键 词： | EGM2008 高程异常拟合 加权组合模型 重力场模型 |
| 收稿时间： | 2017-04-18 |
Height Anomaly Fitting Based on EGM2008 Model and Weighted Composite Model |
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| LUO Taorong,WANG Zhongyuan,LIANG Ning,MA Xiaoshen.Height Anomaly Fitting Based on EGM2008 Model and Weighted Composite Model[J].Bulletin of Surveying and Mapping,2018,0(1):28-32. |
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| Authors: | LUO Taorong WANG Zhongyuan LIANG Ning MA Xiaoshen |
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| Institution: | 1. School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China;
2. Shaoxing City Planning Surveying and Mapping Institute, Shaoxing 312000, China |
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| Abstract: | Height anomaly fitting is an important technical means that the value of GPS height measurement is applied in practice.In this paper,the height anomaly fitting method based on EGM2008 gravity field model is proposed that the long wave item of height anomaly is calculated through EGM2008 gravity field model and the residual height anomaly is fitted through weighted composite model. The measurement data is used to verify the performance of weighted combination model based on EGM2008 gravity field model in the city of Jiangsu province.Numerical results show that the method proposed can increase the performance of this method by 30％and reach centimeter-level in height anomaly fitting. |
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| Keywords: | EGM2008 height anomaly fitting weighted combination model gravity field model |
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