On generalised and specialised spatial information grids: are geo-services ready?  

作　　者：D.Li 

机构地区：[1]LIESMARS,Wuhan University,Wuhan,P.R.China

出　　处：《International Journal of Digital Earth》2008年第4期315-325,共11页国际数字地球学报（英文）

摘　　要：After the set-up of a spatial data infrastructure(SDI)and a national information infrastructure(NII)in many countries,the provision of geo-services became one of the most important and attractive tasks.With the integration of global positioning system(GPS),geographic information system(GIS)and remote sensing(RS),we can,in principle,answer any geo-spatial related question:when and where what object has which changes?An intelligent geo-service agent could provide end-users with the most necessary information in the shortest time and at the lowest cost.Unfortunately there is still a long way to go to achieve such goals.The central component in such geo-services is the integration of the spatial information system with a computing grid via wire-and wireless communication networks.This paper will mainly discuss the grid technology and its integration with spatial information technology,expounding potential problems and possible resolutions.A novel categorising of information grids in the context of geospatial information is proposed:generalised and specialised spatial information grids.

关 键 词：spatial data infrastructure(SDI) geo-service information grid grid computing generalised and specialised spatial information grids 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]