Analysis of frame rate matching of infrared scene simulation system based on DMD

HE Yong-qiang; TANG De-shuai; GENG Da; YUAN Xiong

doi:10.3788/YJYXS20142905.0812

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Analysis of frame rate matching of infrared scene simulation system based on DMD

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- Analysis of frame rate matching of infrared scene simulation system based on DMD
- Chinese Journal of Liquid Crystals and Displays Vol. 29, Issue 5, Pages: 812-817(2014)
- 作者机构：
  
  军械工程学院电子与光学工程系, 河北石家庄 050003
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20142905.0812
  CLC： O438
- Received：29 August 2013，
  
  Revised：12 October 2013，
  
  Published Online：15 October 2013，
  
  Published：05 October 2014
- 稿件说明：
移动端阅览
何永强, 唐德帅, 耿达, 元雄. 基于DMD的静态场景仿真成像特性分析[J]. 液晶与显示, 2014,29(5): 812-817

HE Yong-qiang, TANG De-shuai, GENG Da, YUAN Xiong. Analysis of frame rate matching of infrared scene simulation system based on DMD[J]. , 2014,29(5): 812-817
何永强, 唐德帅, 耿达, 元雄. 基于DMD的静态场景仿真成像特性分析[J]. 液晶与显示, 2014,29(5): 812-817 DOI： 10.3788/YJYXS20142905.0812.

HE Yong-qiang, TANG De-shuai, GENG Da, YUAN Xiong. Analysis of frame rate matching of infrared scene simulation system based on DMD[J]. , 2014,29(5): 812-817 DOI： 10.3788/YJYXS20142905.0812.

摘要

由于数字微镜器件特殊的成像特点，使得场景仿真系统在工作过程中需要解决帧频匹配问题，否则会出现图像混淆现象。分析了DMD芯片实现脉宽调制的特点以及帧频匹配对仿真场景成像系统的影响。通过在仿真系统不同显示时间和探测器不同积分时间情况下进行实验，得出了仿真系统进行静态场景仿真时帧频匹配需要满足的条件，即当满足探测器积分时间达到仿真系统显示时间的整数倍时，就可以避免图像混淆现象发生，而不需要外接同步触发信号。这种方法可以降低工程实现难度，对红外场景仿真系统的推广应用具有重要意义。

Abstract

Due to the special imaging features of digital micro-mirror device

the scene simulation system need to be addressed in the course of their work frame matching problem to avoid an image aliasing.The modulation characteristics of DMD chip pulse width and the effects that frame rate matches the simulation scene imaging system were analyzed. Through carrying out the system experiments in different display time and detector integration time

the frame matching condition of static scene simulation was obtained

which was that the phenomenon of image aliasing could be avoided when the detector integration time was integral multiple of the display time of simulation system without external synchronization trigger signal. This method can reduce the difficulty in engineering implementation

and it is also important to popularize the application of infrared scene simulation system.

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references

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