关于在VRML技术中应用STK模型的研究

虚拟现实(Virtual Reality，简称VR)是一种可以创建和体验虚拟世界的计算机系统。VRML(Virtual Reality Modeling Language)为虚拟世界的建立提供了规范，VRML在电子商务、教育、工程技术、建筑、娱乐、艺术等领域的广泛应用。将会成为构建虚拟现实应用系统的基础。由于VRML与网络紧密联系，可以利用VRML技术将航天任务模拟从单机转移到冈上，这样网络用户就可以从互联网上了解航天任务的进行。但是模型的建立是非常困难和繁琐的。利用美国AGI(Analytical Graphics。Inc．)公司开发的STK(Satellite Tool Kit)就可以获得关于描绘空间飞行器、飞机、地面车辆、地面站、目标等资源丰富的模型。该文分别介绍了STK和VRML模型文件的特点，通过对两种模型文件的分析。得出如何将STK模型文件转换成为VRML模型文件的具体方法，以便在虚拟世界中应用。

Application of STK Model in VRML Technology

VR(Virtual Reality) is a computer system, in which we can establish and experience virtual world. VRML (Virtual Reality Modeling Language) has offered the standard for building virtual world, being widely used in the field of e-commerce, education, engineering, building, amusement and art, and will become the foundation of virtual reality application system. Because VRML has a close connection with internet, so we can transfer simulation of space mission from PC to internet, and users can see the progress of space mission by this way. But building model is very difficult and fussy, from STK(Satellite Tool Kit)of AGI(Analytical Graphics, Inc.),we can get a great amount of models about spacecraft, plane, ground vehicle, station, the goal, etc. This paper introduces the characteristic of STK and VRML model file, and by analyzing model file, the way for transforming STK model file to VRML model file will be got, in order to be used in virtual world.