自主平台下的火箭飞行三维实时仿真系统的研究与实现

Research and Implement of 3D Real-Time Simulation System of Rocket Flying Under Domestic Independent Platform

以OSG(Open Sence Graph)为仿真引擎,通过构建反映视点距离和地形起伏程度的细分评价函数,采用动态四叉树和影像金字塔技术,建立了支持多分辨率影像的三维地球模型。根据对火箭弹道实时平滑处理的要求,描述了弹道野值的数学模型,提出了自适应门限的野值剔除算法。同时分析了火箭尾焰特效的渲染方法,并将开发的中标麒麟三维仿真系统与运用常规STK和EV-globe引擎开发的软件进行比较。比较结果表明:本系统同样具有较好的实时性和沉浸感。

Based on the OSG, the paper established a 3D earth model which could support multiresolution image by buliding segmentation evaluation function which can reflect the degree of distance and topography, and the method of dynamic quadtree and image pyramid. According to the requirements of 3D simulation of rocket trajectory real-time smoothing, we described a mathematical model outliers, and proposed adaptive threshold culling algorithm to outliers. This paper also studied the rendering method of the rocket flame. It compared the developed 3D real-time simulation system of CS2C Neo- Kylin with the softwares which were developed by STK and EV-globe simulation engine. The result show that the system also has better real-time performance and immersion.