Because traditional real equipment of one type guided weapon has some disadvantages such as high training cost, short life and low safety coefficient, a virtual view system is proposed and some key technologies are introduced.It includes the establishments of virtual battleground and scene render by using OSG technology, environment model's setup by Google Earth database as well as collision detection and target spot judgement based on the intersection calculation between ray and geometry.Virtual experiment about anti-tank missile hitting the targets is carried out through the system.The results shown that the confidence coefficient of the virtual system reaches up to 85% under different conditions of sunny, low rain, moderate rain, fog weather, area and interference type. It provides a solution with low cost and strong feasibility for military simulation, especially at target attack simulation.%针对典型制导武器的常规实装训练成本高、寿命短、安全系数差等问题,提出一套虚拟视景系统并研究该系统的若干关键技术,主要包括利用OSG技术建立虚拟战场及场景渲染、基于Google Earth 数据源建立环境模型、基于"射线/体"的交运算完成碰撞检测和靶点判定;通过该系统进行典型制导武器打击坦克目标虚拟仿真实验,仿真结果表明该系统在晴、小雨、中雨、雾等几种天气、地区和干扰类型均达到85%置信度;所获结果可为军事模尤其是目标打击模拟提供一种成本低、可行性强的方法.
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