摘要
海量空间信息的处理需要分布式协同工作的GIS平台支持。为解决空间数据源的异构和分布式网络中的计算能力共享问题,设计了分布式空间信息的协同计算模型,分析了分布式空间信息协同计算具备的基本特征;从空间数据分布存储模型、空间数据分布式计算协同和分布式空间数据并行索引等方面讨论分布式空间信息的协同计算技术体系,并提出现阶段可行的实现机制。分布式对等协同计算机制避免了集中式执行引擎带来的网络拥塞和单点失效问题,提高了海量空间信息资源和计算资源协作的可靠性和可用性。
The management of the magnanimous spatial data needs the distributed cooperative GIS platform, In order to resolve the heterogeneous geospatial data sources and the sharing of distributed computing, this paper designed the distributed cooperative computing model, From the points of spatial data storage model, spatial data distributed computing cooperation and distributed and parallel geospatial index ,discussed the technical and theoretical system in detail and presented the feasible im- plement mechanisms. Compared to centralized ones, the distributed peer to peer cooperative computing had several benefits, such as avoiding network congestion and single point of failure, and improving the availability and reliability of geospatial data information and computational resources.
出处
《计算机应用研究》
CSCD
北大核心
2008年第7期2060-2063,2070,共5页
Application Research of Computers
基金
国家“863”计划资助项目(2006AA12Z218)
关键词
分布式计算
协同计算
对等计算
地理信息系统
distributed computing
cooperative computing
peer-to-peer computing
GIS
