| 多级空间信息网格间的平面坐标变换精度分析 |
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| 引用本文： | 袁修孝,付迎春,张过,付建红.多级空间信息网格间的平面坐标变换精度分析[J].武汉大学学报(信息科学版),2005,30(2):110-114. |
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| 作者姓名： | 袁修孝 付迎春 张过 付建红 |
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| 作者单位： | 武汉大学遥感信息工程学院,武汉市珞喻路129号,430079 |
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| 基金项目： | 国家863计划资助项目(2003AA132080) |
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| 摘 要： | 简要介绍了在多级空间信息网格间进行坐标变换的基本原理，通过对平面仿射变换与严格坐标变换坐标精度的比较发现，在适当尺度的网格内。用平面仿射变换代替严格变换的坐标变换精度高于地图表达精度。试验结果为多级空间信息网格的划分及适应空间坐标变换的空间数据组织方式提供了尺度准则。
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| 关 键 词： | 多级空间信息网格 坐标变换 精度 |
| 文章编号： | 1671-8860(2005)02-0110-05 |
| 修稿时间： | 2004年11月28 |
Accuracy Analysis of Planmetric Coordinate Transformation Between Spatial Information Multi-grids |
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| YUAN Xiuxiao,FU Yingchun,ZHANG Guo,Fu Jianhong.Accuracy Analysis of Planmetric Coordinate Transformation Between Spatial Information Multi-grids[J].Geomatics and Information Science of Wuhan University,2005,30(2):110-114. |
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| Authors: | YUAN Xiuxiao FU Yingchun ZHANG Guo Fu Jianhong |
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| Institution: | YUAN Xiuxiao 1 FU Yingchun 1 ZHANG Guo 1 FU Jianhong 1 |
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| Abstract: | This paper introduces briefly the principle of coordinate transformation between the spatial information multi-grids. By comparing the coordinate accuracy of the affine transformation and rigorous coordinate transformation, it is found that the coordinate accuracy of affine transformation instead of rigorous coordinate transformation is higher than map presentation accuracy in the grid of proper scale. The experimental results provide the scale criterion for both the division of spatial information multi-grid and the manner of spatial data organization which is adapt to spatial coordinate transformation. |
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| Keywords: | spatial information multi-grid coordinate transformation accuracy |
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