Research of Grid Map Services Implementation for Spatial Information Grid

The key issue in implementation of Grid Map Service based Spatial Information Grid (SIG) is combing geospatial information services with grid framework WSRF. The spatial information service specifications developed by OGC based on Web Service such as WMS, WFS, WCS are stateless services, so they cant record the content of the concrete operation of services, service address, service time and other runtime information about service. WSRF framework is characterized by combing stateless services with stateful resources. This article research on how to combine grid technology with geospatial specifications and technologies, add stateful property resources through wrapping OGC services for grid to solve runtime problem of OGC service, and how to implement spatial information services in WSRF grid framework. The major work of this article includes follows: 1. Researches on how to capture and analysis OGC Web Services use XML and java technology, get the service metadata. 2. Researches on how to build spatial information service model under the grid framework WSRF. 3. Researches on the combination method of grid and OGC map service, then on this basis, put forward a resources packaging method of spatial information service according to WSRF specification and discuss implementation of grid map service.