Implementation Of Spaceflight Launch Site Scene Simulation System

Scene simulation is an interactive environment based on calculable information. Because it can help people to establish the environment that has immersion be personally on the scene, interaction to complex system, imagination and creativity, so it can become the necessary high-tech technology in every social application field. Nowadays, scene simulation technology has become one important portion of simulation system software, and it's also become primary content of virtual reality and distributed interactive simulation.By using some spaceflight launch site as the actual object, the paper researches 3D modeling and scene simulation driving. Spaceflight launch site realized the virtual environment of actual scene, described the viewable process of rocket emission and flying. Based on the characteristics of high real-time and interaction, the paper designed system function, analyzed technology course, advanced holistic frame and confirmed the development environment with MultiGen Creator/Vega.3D modeling is the base of scene simulation system. The paper particular introduced the modeling methods of Multigen Creator, advanced the modeling technology course, established a whole 3D virtual spaceflight launch site model which including terrain, object and environment, researched several modeling pivotal technology, and advanced optimizing technology of 3D virtual scene modeling based on structure optimizing and modeling optimizing.The paper researched the Vega simulation software including LynX graphical interface and application program interface (API), advanced application program frame and basic steps, and particular analyzed the pivotal technology of scene display and driving. Finally, we developed a scene simulation system with VC++ software platform, achieved the real-time display of scene cruise and rocket emission and flying, done the network structure and program optimization.In the actual emission task, the system ran steady, read real-time data exactly, the simulation effect was reality and fluency. The result showed that the development method used in this paper based on design of object-oriented software and rules-based event flow controlling had strong flexibilities and practicability, and can be used in similar development of 3D scene simulation system.