引入数据网格技术构建空间数据网格，可以改善空间数据共享与应用的环境。
The introducing data grid technology and constructing the spatial data grid may improve spatial data sharing and the application environment.
空间数据网格是网格环境下面向空间数据共享与协同，构造一体化空间数据网格映象的技术体系。
Spatial data grid is a technology system which aims at spatial data sharing and cooperating and integrates spatial data into a single image of spatial data grid in the grid environment.
空间数据网格来源于数据网格，本文对它的关键技术-元数据目录、数据代理和网格空间数据库进行了探讨研究。
Spatial data Grid derived from data Grid. In the dissertation, the key technology of Spatial data Grid, including metadata catalog, data broker and Grid Spatial Database are studied.
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