Design and Typical Application of Three-Dimension Visualization Simulation Platform Based on Digital Earth

This paper designed a three-dimension visualization simulation platform (3D-VSP) based on 3D-GIS named World Wind. The concept, objective, principles and four-layer structure of 3D-VSP were proposed. The structure of 3D-VSP consists of data layer, service layer, application layer and client layer. Key technologies of 3D-VSP including 3D visualization scene modeling, integration of geospatial information and Java bindings for OpenGL are also introduced. Typical application on sudden water pollution events simulation of Songhua River was developed based on 3D-VSP. The results show that 3D-VSP could implement integration of mass data and different applications, provide 3D visualization simulation operation environment for sudden water pollution incident, and solve the problem of heterogeneous of different applications.