Abstract: Web services provide a network-based solution to achieving the interoperability of geospatial information processing, but there is a lack of the definition of geospatial information metadata. Against this problem, Web Processing Services (WPS) was proposed by Open Gcospatial Consortium (OGC) who is dedicated to researching GIS resources sharing and processes interoperabifity. This paper proposed an extensible WPS implementation architecture based on the three main operations of WPS to solve the problem of geospatial information interoperability. Furthermore, we proved the design to be reasonable, feasible and extensible and can solve the interoperability problem better by developing a demo WPS platform with merge process according to this architecture.

Key words: Web services, OGC, WPS, Interoperability, Merge