摘要
针对现有诸多全球剖分模型与已有空间数据的存储结构严重不匹配现象,为了更有效地管理、组织和利用海量空间数据,设计基于地图分幅拓展的全球剖分模型。该模型以地图分幅划分方式为基础利用经纬度间隔对全球进行层次性剖分,较高效地实现对现有空间数据直接存储和索引的目的。在分析该全球剖分模型的特性后,给出其剖分面片的层次结构,并在该结构的基础上利用Hilbert曲线设计剖分面片的层次性地址编码方式,建立模型的地址编码空间。理论研究和试验表明,该剖分模型能够更有效地表达和管理多分辨率的全球空间数据。
Currently,many global subdivision models and spatial data don＇t match seriously in their storage structure.The extended model based on mapping division（EMD）is designed to effectively implement management,organization and use of huge spatial data.This model made the hierarchical subdivision by longitude and latitude interval,based on traditional mapping division way to achieve the objectives of direct storage and index for exis-ting spatial data.After the characteristics of these global subdivision models have been analyzed,the hierarchical structure of subdivision cell is introduced.Based on this structure,the multi-resolution address coding of subdivision cell is designed taking advantage of Hilbert curve and its address coding space is established.Theoretical research and experiment indicated that this subdivision model can represent and manage global multi-resolution spatial data more effectively.
出处
《测绘学报》
EI
CSCD
北大核心
2010年第3期295-302,共8页
Acta Geodaetica et Cartographica Sinica
基金
国家973计划(61399)
关键词
地图分幅
全球剖分模型
地址编码
多分辨率
mapping division
global subdivision model
address coding
multi-resolution
