A Extended Web Feature Service Based Web 3D GIS Architecture

Lacking of standard interpretable platform can be a significant reason to limit the development of 3D GIS, the same situation exist in web 3D GIS. This paper will investigate the possibilities to public a functional 3D geo Web services platform using OGC specifications for the Web feature service. To fulfill the requirement of Web feature service and to improve the interoperability of data, we choose a new data modal language - CityGML which is implemented as an application schema for the geography markup language 3 (GML3) to build 3D geo-data. Then present a web 3D GIS architecture based on Web feature service, and give out the key techniques and implementation method of this architecture, finally carry out a prototype environment, to prove the architecture can adequate for access to 3D geo-data.