| GPS高程测量及其在桥梁工程中的应用 |
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| 引用本文： | 王胜强.GPS高程测量及其在桥梁工程中的应用[J].测绘与空间地理信息,2012(7):115-117,120. |
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| 作者姓名： | 王胜强 |
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| 作者单位： | 甘肃省测绘工程院 |
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| 摘 要： | 介绍了多项式曲线拟合和二次曲面拟合的原理、方法和建模过程及其评定精度的指标。运用兰州黄河大桥的控制网数据,根据点位分布情况,选择不同的拟合点,分别运用多项式曲线拟合和二次曲面拟合方法建立拟合模型,用检核点对模型进行检核,求出模型的内外符合精度,并与国家等级水准测量进行比较,最后得出几点结论。
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| 关 键 词： | 高程异常 GPS高程测量 曲线拟合模型 曲面拟合模型 精度评定 |
GPS Elevation Measurement and Its Application in Bridge Engineering |
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| WANG Sheng-qiang.GPS Elevation Measurement and Its Application in Bridge Engineering[J].Geomatics & Spatial Information Technology,2012(7):115-117,120. |
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| Authors: | WANG Sheng-qiang |
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| Institution: | WANG Sheng-qiang(Surveying and Mapping Engineering Institute of Gansu Province,Lanzhou 730050,China) |
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| Abstract: | The paper introduces principles,methods,modeling process and accuracy assessment indicators of the quadratic polynomial curve fitting and surface fitting.Based on the case of Lanzhou Yellow River control network data and according to the distribution point,different fitting points are selected and quadratic polynomial curve fitting and surface fitting are used respectively to establish fitting models,to check model nuclear and to calculate its inner and outer accuracy.The result is compared with the one of national level and the conclusion is drawn. |
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| Keywords: | height anomaly GPS elevation measurement curve fitting model surface fitting model accuracy assessment |
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