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。
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.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2005年第2期110-114,共5页
Geomatics and Information Science of Wuhan University
基金
国家863计划资助项目(2003AA132080)
关键词
多级空间信息网格
坐标变换
精度
spatial information multi-grid
coordinate transformation
accuracy
