Grid GIS is the product combining grid and GIS theories and technologies. The Quadruple Geo-spatial Grids structure
model describes the Grid GIS as the structure interleaving technical layer and functional grid, which makes the grid
computing and new generation spatial data model a basis, as well as the spatial information network application and
service as a core. The article, based on the Quadruple Geo-spatial Grids structure model, conducts technologies such as
OGSA, Web service, middleware, Agent and GML, etc, and also presents a runtime structure of Grid GIS structure
unveiled the type, creation, operation and application mechanisms of spatial information grid service. The writer
established an experimental prototype system based on GT3 environment, and proved the rationality and feasibility of
the Quadruple Geo-spatial Grids structure.
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