Architecture and key technologies of grid geographic information system  

作　　者：FANG Yu,HUANG Zhou,CHEN Bin,WU Lun & YIN DaFei Institute of Remote Sensing and Geographic Information System,Peking University,Beijing 100871,China 

出　　处：《Science China(Technological Sciences)》2008年第S1期102-113,共12页中国科学（技术科学英文版）

基　　金：National Natural Science Foundation of China (Grant No. 40501052);the National Hi-Tech Research and Development Program of China (Grant No. 2006AA12Z201)

摘　　要：The highly efficient and stable collaborative computation platform for geospatial information can be constructed on the basis of Grid computing technology,com-bined with Peer-to-Peer (P2P) computing technology and geospatial database technology. This paper proposed the architecture and key technologies of the Grid GIS (Geographic Information System) incorporated with P2P structure,and corre-spondingly a Grid GIS prototype named Nebula was designed and then imple-mented. Nebula is a suite of middleware for geospatial Grid computing,which could be deployed onto various service nodes in network. Based on Grid protocols and infrastructure,Nebula provides invocation interfaces to users in form of Grid services. By using P2P message based communication mechanism,complex geospatial computation tasks could be accomplished by Nebula in a collaborative way. This paper introduced Nebula's architecture and key modules,and according to experimental data,we discussed the Grid GIS's advantages,application scenar-ios and future directions.The highly efficient and stable collaborative computation platform for geospatial information can be constructed on the basis of Grid computing technology,com-bined with Peer-to-Peer (P2P) computing technology and geospatial database technology. This paper proposed the architecture and key technologies of the Grid GIS (Geographic Information System) incorporated with P2P structure,and corre-spondingly a Grid GIS prototype named Nebula was designed and then imple-mented. Nebula is a suite of middleware for geospatial Grid computing,which could be deployed onto various service nodes in network. Based on Grid protocols and infrastructure,Nebula provides invocation interfaces to users in form of Grid services. By using P2P message based communication mechanism,complex geospatial computation tasks could be accomplished by Nebula in a collaborative way. This paper introduced Nebula’s architecture and key modules,and according to experimental data,we discussed the Grid GIS’s advantages,application scenar-ios and future directions.

关 键 词：GRID GIS DISTRIBUTED GEOSPATIAL COMPUTING PEER-TO-PEER COMPUTING 

分 类 号：P208[天文地球—地图制图学与地理信息工程]