The Design of Middleware-Based Grid-GIS

Based on the framework of Grid-Computation and Spatial Information Grid(SIG), this paper proposes a new kind of Middleware-Based Grid-GIS, which can utilize all the spatial data, analyztical software and computation environment as its sharing resources, and approach the infrastructure, the organizational system and the implementation pattern of its. In addition, some key frontier techniques including how to implement Federated Spatial Database, to realize spatial computation environment and virtual geo-environment based on the middlewares are also discussed.