Operation Of Ontology-based Spatial Information Sharing And Mutual Study

Although Internet has revolutionarily connected users with information whichdistribute throughout the world and exist in different forms, the spatial informationresources on the Internet are still geared to specific industry, dependent on specificsupport condition and form distributed and isomerous spatial information islets:respectively independent, relatively isolate and unable to interoperate.How to make these spatial information islets respective independence as well asinteroperate and how to make Internet users rapidly and accurately locate, attain anduse cared spatial information, and so on, are the focus of international spatialinformation study at present and also one of the key techniques of digital city projectand spatial information infrastructure project.The wide gap between Internet users and spatial information islets can be concludedinto three issues of spatial information interoperate: attainability, usability andeasy-to-use.So, the paper puts forward Ontology-Based Spatial Information InteroperationFramework (OBSIIF). OBSIIF is a dynamic and exoteric flat roof which is used forinformation and service share and interoperation, and which is based on Web Serviceand combines with Ontology theories. The text lays emphasis on OBSIIF systemstructure, spatial information model-Geo-Ontology and service model.The key of OBSIIF system structure is to treat information and service uniformly as Internet resources. Putting information and service into Web service system can solve attainable issue, taking metadata out of information and service, establishing conceptual model and releasing it on the Internet can solve useable and easy-to-use issues.OBSIIF spatial information model draws common views of spatial information domain, adopts XML as spatial information expression method, uses OWL/RDF to express the semantic of spatial information, and centers on solving the problem of understanding and exchanging spatial information between application procedures. The text gives detailed exposition about the building, management and use ofGeo-Ontology. On the basis of absorbing advantages of traditionally establishing Ontology, the text puts forwards the mixed method to establish Geo-Ontology, breaking through the limit of traditional method.OBSIIF puts forward solving scheme of managing and using service by the means of Web Service technology on the Internet. By the means of five class services, it realizes spatial information and service mutual management. Coordination service plays the role of 'organizer' and is responsible for the whole coordination and arrangement; two navigation play the role of 'deliverer' and are responsible for gaining and dispensing mission; two spatial information manipulation service are true 'worker' and are responsible for actual work manipulation. At the same time OBSSIIF specially puts forward taking 'Ontology-based Services' to manage and use numerous service resources distributed throughout Internet, it can uniquely identify service, describe service ability and realize service interfaces. Through these information, users can dynamically and automatically find, use and combine these services, and realize spatial information service resources share and interoperation. To make further testing and verifying of OBSIIF realization, the text does prototype exploration. Combining with resources now available, the test put forward solving scheme of system integration which is based on ArcGIS Server and takes ArcEngine as developing component.In final, the text sums up the innovations, looks forward to the future and puts forward the next work emphasis.