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军械工程学院 电子与光学工程系, 河北 石家庄 050003
[ "何永强(1966-),男,辽宁营口人,博士,副教授,硕士生导师,主要研究方向为光电对抗和信息处理。E-mail:yongqianghe@sohu.com" ]
[ "唐德帅(1984-),男,河北涿鹿人,硕士研究生,主要研究方向为光电对抗和光学设计。E-mail:tangdeshuai@126.com" ]
[ "耿达(1992-),男,河北景县人,硕士研究生,主要研究方向为光电对抗。E-mail:gd199051@126.com" ]
[ "元雄(1991-),男,江西乐安人,硕士研究生,主要研究方向为光电对抗。E-mail:1439454712@qq.com" ]
收稿日期:2013-08-29,
修回日期:2013-10-12,
网络出版日期:2013-10-15,
纸质出版日期:2014-10-05
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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.
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。
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.
唐德帅,何永强,黄富瑜,等. 基于DMD的动态红外场景仿真技术研究[J]. 红外技术, 2012,34(8):476-481. Tang D S, He Y Q, Huang F Y,et al.Study on dynamic infrared scene simulation technique based on digital micro-mirror device[J].Infrared Technology,2012,34(8):476-481. (in Chinese)[2] 陈建华,朱明,黄德天. 数字微镜器件动态红外场景投影技术[J]. 中国光学与应用光学, 2010,3(4):325-336. Chen J H, Zhu M, Huang D T. Dynamic infrared scene projection technology based upon digital micromirror device[J].Chinese Journal of Optics and Applied Optics,2010,3(4):325-336. (in Chinese)[3] 胡华超,魏冰妍,胡伟,等. 动态掩膜光刻在液晶取向中的应用[J]. 液晶与显示, 2013,28(2):199-203. Hu H C, Wei B Y, Hu W,et al.Applications of dynamic mask based photolithography in liquid crystal alignment[J].Chinese Journal of Liquid Crystals and Displays,2013,28(2):199-203. (in Chinese)[4] 徐正平,王德江,黄厚田,等. 数字微镜器件视频显示性能分析[J]. 液晶与显示, 2013,28(2):255-260. Xu Z P, Wang D J, Huang H T,et al.Analysis on performance of video displaying system based on DMD[J].Chinese Journal of Liquid Crystals and Displays,2013,28(2):255-260. (in Chinese)[5] Dennis R P, James A. Carter Ⅲ digital mirror device infrared scene projector[J].SPIE,1994, 2223:75-86.[6] Brett B D, Bender M, Crosby J,et al.Advancements in the micromirror array projector technology II[J].SPIE,2005, 5785:68-79.[7] Easley D B, Bender M, Crosby J,et al.Dynamic infrared scene projectors based on DMD[J].SPIE,2009, 7210:0I/1-0I/2.[8] 张凯,孙嗣良. 红外动态场景目标模拟器系统设计[J]. 红外与激光工程, 2011,40(1):12-16. Zhang K, Sun C L. Design of infrared dynamic scene target simulator system[J].Infrared and Laser Enginee-ring,2011,40(1):12-16. (in Chinese)
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