Open Geospatial Information Services Chaining Based on OGC Specifications and Processing Model

Sharing and integrating geospatial resources (geo-data and geo-processing) in opening Web environment is a challenge for GISystem. This paper discusses a geospatial information processing concept model complied interoperable system framework and an implementation approach for accessing geospatial information openly by chaining individual service module to assemble complex geospatial processing and executing the processing model to deliver information to the users under service oriented architecture (SOA) and open GIS consortium (OGC) standard. Processing concept model provides a mechanism to unify the representation of geospatial data, information and knowledge. OGC Web processing service (WPS) is employed and extended for processing raster data (remote sensing images). Implementation of processing model and OGC complied geospatial information services shows that the framework supports: standard-based geospatial data and services discovery and access; geospatial web services chaining, binding, and executing based on workflow.