| 带状GPS水准曲线拟合方法探讨 |
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| 引用本文： | 赵铁怀.带状GPS水准曲线拟合方法探讨[J].测绘科学,2010,35(4):14-16. |
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| 作者姓名： | 赵铁怀 |
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| 作者单位： | 中铁一院集团甘肃铁道综合工程勘察院有限公司,兰州,730000 |
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| 摘 要： | 带状GPS水准拟合是铁路项目勘测中急需解决的问题,本文试着对一些常见数学拟和方法比较,结合带状工程数据(郑州-西安高速铁路GPS和二等水准数据)的分析比较,力求找到一种简单有效的、能满足一定精度要求的带状工程拟合方法,来解决这个问题。通过对各种拟合方式的筛选,结合线性工程项目的特点,给出了二次抛物线分段拟合和张力样条分段拟合公式。
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| 关 键 词： | GPS高程 高程拟合模型 分段二次曲线函数 分段张力样条函数 |
Study on curve fitting of GPS level height for belt area |
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| ZHAO Tie-huai.Study on curve fitting of GPS level height for belt area[J].Science of Surveying and Mapping,2010,35(4):14-16. |
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| Authors: | ZHAO Tie-huai |
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| Institution: | ZHAO Tie-huai(First Survey and Design Institute of China Railway Group,Gansu Servet Co.Ltd.,Lanzou 730000,China) |
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| Abstract: | Banded GPS level fitting is an urgent problem in the railroad item survey.This text tried to solve this problem with a simple,valid and accurate fitting method of banded engineering by comparing with some familiar fitting algorithms and combining with analysis on practical data such as Zhengzhou-Xi'an Mass Rapid Transit GPS and second class level data.According to the criterion of linear engineering,the paper finally gave the formulas of quadratic parabola piecewise fitting and tension spline piecewise fitt... |
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| Keywords: | GPS level model of height fitting quadratic curve piecewise function tension spline piecewise function |
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