期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2007
卷号：XXXVI-4/W54
页码：229-235
出版社：Copernicus Publications
摘要：Firstly, start with the application and requirement of Global Geo-Grid System, the paper analyzes the essentiality of generating partial grids. On the basis of them, the fundermental thought of generating partial grid which is under the global geo-grid frame are proposed, detailed edge problems of partial high-precision grid are analyzed. Start with the ubiety between a point and a spherical triangle, we discuss the ubiety between a point and a spherical random polygon, and then edge simplifying algorithm of spherical random polygon are studied, as well as co-relationship between points and spherical random polygon, grid district clipping based on span the developed surface, grid data hierarchical creating algorithm. In the end we prove exactness and efficiency of the algorithm through the experiments
