基于DMD的红外场景仿真系统实验分析

Experiment analysis on infrared scene simulator system based on DMD

基于数字微镜器件(DMD)的动态红外场景仿真系统由于其特性已成为研究热点并广泛应用。介绍了DMD的工作原理及其灰度调制技术。分析了探测器积分时间与DMD显示时间匹配对系统成像的影响,得出在静态场景仿真时两者满足一定关系即能消除图像混淆现象,而在动态场景仿真时只有外接同步信号的情况下才能得到清晰完整的图像,并进行了实验验证。

The dynamic infrared scene simulation system based on digital micro- mirror device（ DMD） has been the hotspots and used widely. The operational principle of DMD and its gray modulation technology are introduced. The effect of matching of the detector integration time of and the DMD display time on system imaging is analyzed. The results show that the imaging aliasing can be eliminated when the above time satisfies a certain relation under static scene simulation,but under the dynamic scene simulation,the clear and complete image can be obtained when the external signal is only synchronous.