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球面格网系统是一种新型栅格数据模型。在全面检索和分析前人相关研究成果的基础上,将球面格网系统分成4种类型:基于经纬线划分的格网系统、基于正多面体划分的格网系统、基于Voronoi划分的格网系统和混合格网系统;并针对各种不同类型的格网,分析了同级格网单元的空间几何特征及不同级别格网之间的层次嵌套等特性。通过对比分析,给出不同格网系统的优缺点及其适用领域,认为不存在满足所有需求的通用的格网系统,相关应用只能针对具体情况,选用最适宜的格网系统。 更多还原

【Abstract】 As a new spherical raster data model,global grid system has attached more and more important in many research areas about global issues.Based on an overall retrieval analysis of previous researches,in this paper,global grid system is classified into four classes,i.e.global grid system respectively based on latitude & longitude,plato polyhedron,Voronoi and mix global grid system.As for different global grid system,their unit geometry properties at the same level and hierarchical nesting featu...