| 利用原有似大地水准面成果多项式拟合GPS/水准高程的精度估计 |
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| 引用本文： | 沈飞,宋玉兵,隋铭明.利用原有似大地水准面成果多项式拟合GPS/水准高程的精度估计[J].现代测绘,2006,29(3):20-22. |
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| 作者姓名： | 沈飞 宋玉兵 隋铭明 |
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| 作者单位： | 1. 江苏省测绘工程院,江苏,南京,210013
2. 南京林业大学土木工程学院,江苏,南京,210037 |
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| 摘 要： | 多项式拟合在GPS高程拟合中最常采用,但是直接拟合高程异常的方法在高程异常变化不平缓的地区精度较差。本文试图在利用已有局部似大地水准面资料的基础上拟合高程异常残差,进而确定局部内小地区的正常高。本文首先阐述了四次多项式拟合的基本原理以及精度评定方法,然后具体算例,实际计算分析了此种拟合方法的精度。同时接合得出的结果,对小地区似大地水准面的二次精化提出了有益的建议。
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| 关 键 词： | 精度估算 多项式拟合 GPS/水准 二次精化 似大地水准面 |
| 文章编号： | 1672-4097（2006）03-0020-03 |
The Estimation of the Precision of Fitting GPS/Leveling Elevation Based on Original Quasi-geoid with Polynomial Method |
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| Shen Fei,Song Yubing,Sui Mingming.The Estimation of the Precision of Fitting GPS/Leveling Elevation Based on Original Quasi-geoid with Polynomial Method[J].Modern Surveying and Mapping,2006,29(3):20-22. |
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| Authors: | Shen Fei Song Yubing Sui Mingming |
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| Institution: | 1 Surveying and Mapping Engineering Institute of Jiangsu Province, Nanjing 210013 ;38 2 Department of Civil Engineering, Nanjing Forest University, Nanjing 210037 |
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| Abstract: | Polynomial method is usually used in fitting the GPS/level elevation,but it couldn't obtain the good results when the gravity anomaly is uneven.In this article,the author try to use the new method which fitting the remained difference by subtracting the original quasi-geoid data.Firstly,the author discusses the theory of the fitting method and precision estimate,and then analyzes the precision through calculating a practical example.Finally,the author gives some suggestions in fitting small regional quasi-geoid as well. |
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| Keywords: | Precision estimation Polynomial fitting GPS/Leveling Re-refined Quasi-geoid |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
