| 规则格网上双方向性插值DEM精度研究 |
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| 引用本文： | 陈再辉.规则格网上双方向性插值DEM精度研究[J].测绘工程,2009,18(4):28-31. |
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| 作者姓名： | 陈再辉 |
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| 作者单位： | 丽水市建设局城建测量队,浙江,丽水,323000 |
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| 摘 要： | 简要介绍双方向性插值方法的原理，并以线性插值和三次插值过程中的误差传播为基础，利用误差传播定律，推导出双方向性插值方法生成的DEM曲面平均高程误差值，并对线性插值和三次插值公式本身的精度进行分析。
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| 关 键 词： | 规则格网 双方向性插值 数字高程模型 误差 |
Research on DEM error of double orientation interpolation on grid |
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| CHEN Zai-hui.Research on DEM error of double orientation interpolation on grid[J].Engineering of Surveying and Mapping,2009,18(4):28-31. |
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| Authors: | CHEN Zai-hui |
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| Institution: | CHEN Zai-hui (Surveying Union of City Construction, Lishui Bureau of Construction,Lishui 323000, China) |
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| Abstract: | The theory of double orientation interpolation is simply introduced, Based on error transmission of linear interpolation and cubic polynomial using error transmission principle, the average elevation error of DEM surface is deduced. The accuracy of linear interpolation and cubic polynomial is analyzed. |
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| Keywords: | grid double orientation interpolation DEM error |
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