Study Of Spatial Data Interoperability Of Grid GIS Based On GML

The Grid GIS inherits and develops in foundation of the traditional geography information technology.The primary problem to construct grid geographic information system environment is the distributivity of spatial data in the geographical position and the isomerism of data pattern and data storage way. To construct spatial data integration service,solute the difficult problem of spatial data which distributed isomerism brings about,and provide the unification connection for the distributional isomerism spatial data to visit are key technologies for the establishment based on the grid environment spatial information decision making system.Thus using GML to describe the real world could separate spatial information's performance from the content, moreover using the GML schema translation rule to structure the mapping of spatial data application pattern to GML Schema can effectivly solute the isomerism of spatial data integration.The author researches the method of spatial data interoperability under the grid evironment through the analysis of present situation of current spatial data interoperability method, and finally figures out that the method of spatial data interoperability of Grid GIS based on GML and SOAP transmission mechanism is the better plan;the author integrates the spatial data interoperability with the grid service and reasearches the virtualization of spatial data sevice based on analyzing the method of spatial data interoperability of grid GIS based on GML and SOAP transmission mechanism and constucts the service-oriented spatial data interoperability system.On the base of analyzing all the above theory and aims at the isomerism of spatial data,the author designs the spatial data interoperability's grid service based on GML and SOAP.This plan involves establishing unified model,based on GML standard and solving the problem of integration of spatial data through mapping isomerism spatial data to the GML pattern.The author acts according to the concrete modelling example to carry on the analysis proof in the article.Finally, the author carried on the confirmation to this interoperability method through a concrete example of data integration under grid environment.