摘要： 针对元数据目录服务MCS对多源空间数据管理困难的特点，该文提出一种新的分布式空间元数据目录服务SMCS的设计与实现方法。利用顾及空间关系的元数据分类与层级聚合方法，构建具有双向推理机制的层级目录结构，设计空间元数据的聚合操作和实现接口，并基于分布式目录索引方法进行数据查找和定位。SMCS的验证实验表明，该方法能有效管理地理分布、动态异构的海量空间数据，为网格环境下多源空间数据的高效集成应用服务提供技术支持。

关键词: 空间元数据目录服务, 空间关系, 聚合

Abstract: It is difficult for MCS to manage distributed multi-source spatial data. This paper introduces a new Spatial Metadata Catalog Services(SMCS). The spatial relation aggregation operations and catalog interfaces are defined. Thematic classical and nested aggregated collection referred to spatial relations are taken as governable method in the hierarchical catalog. And catalog index is created to find and locate distributed components which are efficiently proved to access, manage huge spatial data. The new application way enabled with SMCS can support efficiently run-time integration and share for huge multi-source spatial data under grid environment.

Key words: Spatial Metadata Catalog Service(SMCS), spatial relation, aggregation

中图分类号: 

• TP301.6