Abstract: Aiming at the complex campus environment and difficult simulation, this article uses osgEarth three-dimensional geographic information system to realize the construction and function development of virtual campus. Taking the Qianhu campus of Nanchang Hangkong University as an example, MultiGen Creator with high modeling accuracy is selected as the modeling tool to create the 3D scene model, and osgEarth with analysis function is used as the simulation platform for the secondary development of specific functions. By building a digital earth, using remote sensing image data, elevation data and 3D models, the visualization and function construction of the 3D virtual scene of the Qianhu campus of Nanchang Hangkong University is realized. The technology plays an important role in school admissions, employment, publicity, education, foreign exchange and other aspects.

Key words: 3D visualization, geographic information system, particle effect, virtual campus