球面似均匀格网的剖分方法及特征分析  

Partition Methods and Character Analysis of Near-Equal Grids on Spherical Facet

作　　者：孙文彬[1] 赵学胜[1] 高彦丽[1] 王洪斌[1] 

机构地区：[1]中国矿业大学(北京)测绘与土地科学系,北京100083

出　　处：《地理与地理信息科学》2009年第1期53-56,60,共5页Geography and Geo-Information Science

基　　金：国家自然科学基金项目"顾及地形的全球离散格网自适应建模"(40771169)

摘　　要：给出球面"似均匀格网"概念的内涵,并介绍3种常用的球面似均匀格网(三角形格网、菱形格网和六边形格网)的剖分方法。从几何上分析3种格网的单元特征及不同格网在不同领域的应用优势。通过对比得出3种格网的特征对照表及相互关系,即:三角形格网是最基本的球面剖分格网,球面六边形格网和菱形格网可以通过球面三角格网来生成,且这3种剖分格网各有优缺点并在一定条件下可以相互转换。Firstly, the connotation of ＂near-equal grid＂ on spherical surface is presented in this paper, the partition methods of three common near-equal grids on spherical facet, such as triangular, diamond, and hexagon, are introduced in details. From geometry, their unit properties and advantages in different applied fields are analyzed deeply. In the end, property Contrasting table and relationships among the common near-equal grids on spherical facet are given. The conclusion is that triangular is the most basic grid of all partition units on sphere and hexagon or diamond grid can be produced by triangular. All of these three grids have some advantages and disadvantages and can be transformed with each other.

关 键 词：似均匀格网 球面剖分 几何特征 

分 类 号：P208[天文地球—地图制图学与地理信息工程]