Research On The Architecture Of Spatial Information Gr Id And Its Application Platform

The grid technology is a kind of rising information technology,and it aimed at achieving high-performance resources sharing and cooperation under virtual environment and eliminating Information Island and Resource Island.For the grid technology of spatial applications,relying on its characteristics of vast quantities of information、convenient of information exchanging,grid technology would be the main trend in future Spatial information system.According to practical engineering project,this master thesis discusses the study situation of spatial information grid technology and the major three architecture model.A kind of spatial information grid technology system cater to servers is presented,and it can imply transparent accessing to geographic information facing to public.Considering the need of aerospace,the information sharing platform with reconstruction and fault-tolerant function is developed preliminary.To guarantee reliability and sustainability of the system,fault tolerance techniques is absorbed to the platform.Based on redundant configuration of the platform,the fault detection and ruling out is designed as a part of the system.Aiming at performance and efficiency of the platform,the evaluation index is given from four aspects as middleware effectiveness of GML、efficiency of the database、network efficiency and server platform.