摘要
目的:设计一种夜视模拟训练系统,以为飞行员提供夜视镜使用的实践性训练。方法:该系统硬件主要由驾驶杆、油门杆、方向舵踏板、平视显示器、控制盒、计算机、投影机和屏幕组成,其中平视显示器、控制盒采用夜视兼容照明技术设计,用于模拟飞行员使用夜视镜飞行时的环境光。软件主要由视景仿真软件、仪表仿真软件、飞行性能仿真软件、综合管理控制软件和座舱管理软件组成,采用C++编程语言开发。采集不同亮度典型场景的夜视图像及计算机渲染图像,将对比度、亮度等客观图像评价指标作为输入,将主观评价数据作为输出,构建支持向量机模型并进行训练。在模型验证和优化的基础上,选取30个夜视训练的典型场景对该系统进行光学逼真度评价。结果:30个夜视训练典型场景的逼真度评价平均得分为8.05分,表明该系统能够较为逼真地模拟不同光照环境、不同气象条件下夜间飞行时的地形、地貌,以及空中、地面、海面的静态和动态目标。结论:该系统达到了预期使用要求,可为飞行员提供夜视训练。
Objective To design a night vision simulation training system to provide pilots with practical training on ground night vision goggles.Methods The system had its hardware composed of a control stick,a throttle lever,rudder pedals,a head-up display(HUD),a control box,a computer,a projector and a screen.The HUD and control box were designed using night vision-compatible lighting technology to simulate the ambient light conditions pilots experienced when flying with night vision goggles.The software of the system consisted of five ones developed with C++programming languge for visual scene simulation,instrument simulation,flight performance simulation,integrated management control and cockpit manage-ment.Night vision images and computer-rendered images of typical scenes with varying brightness levels were collected.Objective image evaluation metrics such as contrast and brightness were used as inputs,while subjective evaluation data served as outputs to construct and train a support vector machine(SVM)model.Totally 30 typical night vision training scenarios were selected based on model validation and optimization to evaluate the system's optical fidelity.Results The average fidelity score for the 30 typical night vision training scenarios was 8.05,indicating that the system could realistically simulate terrain and landscapes under various lighting and weather conditions during night flights and static and dynamic targets in the air,on the ground and at sea.Conclusion The system meets the desired requirements and effectively facilitates night vision training for pilots.
作者
赵超
赵良玉
王加丽
王燕
杨洪岳
崔建飞
ZHAO Chao;ZHAO Liang-yu;WANG Jia-li;WANG Yan;YANG Hong-yue;CUI Jian-fei(The Second Military Representative Office of the Air Force Material Command in Tianjin Region,Tianjin 300308,China;Tianjin Renai College,Tianjin 301636,China;Tianjin Jinhang Computing Technology Research Institute,Tianjin 300308,China)
出处
《医疗卫生装备》
2025年第3期21-26,共6页
Chinese Medical Equipment Journal
关键词
飞行员
夜视镜
夜视训练
视景图像仿真
飞行模拟器
pilot
night vision goggles
night vision training
virtual image simulation
flight simulator
