全球多分辨率六边形网格剖分及地址编码规则  

The Subdivision of Global Multi-resolution Hexagonal Grid and the Rules of Address Coding

作　　者：童晓冲[1] 贲进[1] 张永生[1] 

机构地区：[1]信息工程大学测绘学院,河南郑州450052

出　　处：《测绘学报》2007年第4期428-435,共8页Acta Geodaetica et Cartographica Sinica

基　　金：国家自然科学基金项目(40671163);武汉大学测绘遥感信息工程国家重点实验室开放基金项目(WKL(05)0301);测绘学院院课题资助项目(Y0702)

摘　　要：首先介绍全球网格系统的应用需求,讨论采用正多面体剖分的基本要素。在此基础上,提出一种新型的便于存储,具有多分辨率层次索引、管理能力的六边形剖分全球网格系统的设计思路、产生步骤和生成算法。分析现有六边形索引机制的缺陷,给出一种新的球面六边形网格层次结构,在该结构的基础上设计网格的层次化编码方式,成功建立网格的编码空间,详细探讨经纬度坐标与网格地址编码的转换问题,给出并实现基于递归层次离散网格坐标系统的互换算法,严格保证计算的准确性和可靠性。该结构能够无缝地表达和处理不同分辨率的全球网格空间数据。Firstly, the paper introduces the application requirement of Global Grid System, discusses the basic element of regular polyhedron subdivision. On the basis of them, the new designing steps and creating algorithm of storing-convenient, multi-resolution level index, potential management in icosahedrons dividing, hexagon unit global grid system are proposed. Then, shortcomings of existing hexagonal index mechanism are analyzed and a new composing means is developed for spherical hierarchical structure, on those bases, an address coding means of spherical hierarchical structure is designed, we succeeded constructing the grid coding space, discussing conversion problem from geodetic coordinates system to grid coding, proposing and realizing conversion algorithm based on hierarchical recursive discrete grid coordinate system, the veracity and reliability of computation can be assured. This structure can express and process multi-resolution global grid spatial data seamlessly.

关 键 词：全球网格系统 分辨率 编码空间 层次结构 

分 类 号：P208[天文地球—地图制图学与地理信息工程]