虚拟现实建模技术在数字化发射场中的应用

建立数字化发射场是卫星发射信息化和应急保障的基础。本文结合某卫星发射场实时性和交互性视景仿真实现的特点，采用基于三维几何模型的建模及动态显示技术的虚拟场景创建方法，讨论了虚拟漫游系统中建模流程、方法，以及关键技术的实现，分析了通用的三维场景建模的技术路线和流程，给出了地物、天空和实体模型构建的实际解决方案、方法，讨论了基于MultiGen Creator的模型格式转换、纹理贴图、模型简化、LOD技术、DOF技术等建模关键技术。采用MultiGen Creator和Vega软件平台，开发出了一个桌面型的虚拟发射场仿真系统，实现了发射场的数字化和卫星发射的实时仿真。

Application of Virtual Reality Modeling in Digital Launch Site

The Digital Launching Site is the foundation of satellite launch informationization and emergency safeguard. With the modeling method of virtual scene based on 3D geometric modeling and dynamic display technology, the paper discussed the developing procedure and modeling methods in the virtual reality system, which integrated real - time with interaction in the virtual reality system of the digital launching site. The paper proposed the solutions on landscape, sky and objects,and discussed the key modeling technology based on MuhiGen Creator, such as model format transformation, texture mapping, LOD technology, DOF technology and so on. Developing the virtual reality system of the digital launching site under the MultiGen Creator and Vega environment realized the digitalization of launch site and real - time sithulation of satellite launching.