多级空间信息网格间的平面坐标变换精度分析

基金项目: 国家863计划资助项目(2003AA132080)

详细信息

Accuracy Analysis of Planmetric Coordinate Transformation Between Spatial Information Multi-grids

¹School of Remote Sensing and Information Engineering, Wuhan University, 129 Luoyu Road, Wuhan 430079, China

Funds: 国家863计划资助项目(2003AA132080)

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
- 多级空间信息网格 /
- 坐标变换 /
- 精度
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.
- spatial information multi-grid /
- coordinate transformation /
- accuracy