Design And Realization Of Scene Graph System Based On Simulation For FCS Of UAV

The paper bases on the existing semi-physical real-time simulation environment for Flight Control System (FCS) of Unmanned Aerial Vehicle (UAV), aims at the actuality of the output in data and curve form of the system, bases on the theory of the visualization,uses the technique of the modeling,the system running,the model driving and the data communication, designs and achieves the scene graph system based on the real-time simulation system, that could show the real-time flight process of UAV and provides the truth for researching the flight rule of UAV.The first,the paper expounds the classical configure, the object character model,the simulation algorithm and the simulation interface of the semi-physical real-time simulation environment for FCS of UAV, introduces the development and the field of the visualization, shows the functions and the main content of the 3D scene graph real-time simulation.Designs the framework of the 3D scene graph system based on the real-time simulation environment, introduces the MultiGen Creator, VegaPrime and the modeling method of the UAV and the terrain, explains the model motion, the control of the angle of view and the data communication,summarizes the character of the scene graph system.Secondly, introduces the key technology of the modeling such as the .flt data format, LOD and the surface texture, introduces the concept of the digital terrain and the conversion method of the terrain, achieves the model of the UAV and the terrain.In the next chapter,explains the basic conception and the main content of the motion modeling, discusses the flow of the development of the 3D scene graph system, initializes the scene graph system, develops the application, achieves the switch of the angle of view,nests the the interface of the data communication and shows the effect lastly.