虚拟珠峰飞行漫游系统逼真性的研究与实现

介绍了虚拟珠穆朗玛峰飞行漫游系统的构成和功能，给出了珠穆朗玛峰及周边地区数字化地形数据ＤＴＭ的生成方法、ＤＴＭ到美国地质勘察局数字化高程模型ＵＳＧＳ ＤＥＭ的转换算法及地貌影像图的映射方法。建立了一种通用的直升机动力学及控制系统的简化模型，采用龙格－库塔法与欧拉法相结合的积分方法对动力学模型进行了简化计算，并验证了该模型对操纵杆的输入动态响应，实现了人在回路的虚拟直升机对虚拟珠穆朗玛峰地区的逼真漫

Study and Implementation for Fidelity of Air Roaming System above the Virtual Mount Qomolangma

In this paper the structure and functions of virtual Mount Qomolangma air roaming system are introduced. The creation method of Digital Terrain Model (DTM) of Mount Qomolangma region and an arithmetic of converting DTM data to USGS DEM data and mapping method of terrain imagery are presented. A general simplified helicopter dynamic model and a control system model are established and their simplified calculation is carried out by integration combined with Runge Kutta's method and Euler's method in our system. Its dynamic responses to joy stick are validated as well. And finally the air roaming above the virtual Mount Qomolangma region with man in the loop helicopter is implemented.