实时闭环红外场景仿真技术

基于计算机平台的红外场景仿真系统存在输入输出接口受限，实时响应能力不足，可扩展性差的缺点。为此，文中构建了一套基于嵌入式硬件的实时闭环红外场景仿真系统演示平台。引入并行计算与多级流水线技术，采用多片嵌入式处理器级联的方式，解决了单片嵌入式处理器计算能力的不足，实现了实时计算；单任务运行环境使得系统实时响应性能良好，便于实现闭环仿真；自主设计的针对红外应用的三维红外实时渲染引擎提高了仿真精度。详细介绍了系统方案的实现与优化过程，并给出了实验结果。运行时间控制在25 ms/ frame之内，成像帧频为40 frame/ s，结果证明系统达到了设计要求。

Simulation technology of real-time close-looped IR scene

Infrared scene simulation systems based on computers are limited in input and output interface,which induces the weakness in real-time response and extendibility.The demonstration platform of real-time close-looped infrared scene simulation system based on embedded hardware was described.The parallel-calculation and multi-pipeline technology of this system were introduced.It combined several chips together to enhance its real-time calculation capability.The single-task environment enabled the simulation system to response real-time,which made the close-looped simulation possible.A self-design real-time rendering engine especially for infrared application was adopted to enhance the simulation precision.The realization and optimization process of this system were described,and the experimental result was given.The running time was controlled within 25 ms/frame with frame frequency of imaging system of 40 frame/s.All the results prove that it can reache design requirement.