摘要： 空间数据处理网格可以解决传统空间数据处理技术中存在的问题，它融合了空间数据处理技术和网格技术，将在地理上和组织上分散的空间资源聚集起来为空间应用提供强大的计算和数据处理能力。文章介绍了SDPG 的结构，对其关键技术和实现机制作了系统的论述，并在该基础上设计了一个基于SRTM 空间数据的大规模地形分析应用模型。

关键词: 网格计算；空间数据；空间数据处理网格；SRTM

Abstract: Spatial data processing grid can solve related problems of traditional spatial data processing technologies. It integrates spatial data processing technologies with the grid that brings together geographically and organizationally dispersed resources to form a huge computing and data processing infrastructure for spatial applications. This paper introduces the architecture of SDPG and addresses its key technologies of realization. In addition, the model of massive topographical analysis application based on SRTM is designed.

Key words: Grid computing; Spatial data; Spatial data processing grid(SDPG); Shuttle radar topography mission