投影变换中的对分查找方法

The Method of Haitum-finding in Projection Translating

地图投影是一切可测地图的数学基础 ,而从地图中提取空间信息时 ,常需与其它来源的信息进行空间上的匹配 ,在统一的坐标系统下进行分析与处理 ,这就需要进行投影变换。作者针对“公里网→经纬网”的投影反解问题 ,提出一种对分查找解决方案 ,实现了同类问题方法上的统一 ,有较高的速度与精度 ,具有一定的实用价值。

Projection is the mathematical fundation of all measurable maps, when extracting spatial data out from a map, it often need to marry them with informations of other sources so that we could make further analysis in the same coordinate system. In this progress, map projection translating is inevitable. In this paper, the author provided a method of Haitum finding in accordance with problems of “kilometers to longitude/latitude”. The speed is high as well as the accuracy, and it realized a unite method in the same kind of problems. That would be testified to be practical and effective.