| 行间转移CCD的时间延迟积分调光方法 |
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| 引用本文： | 张宇.行间转移CCD的时间延迟积分调光方法[J].上海电力学院学报,2010(12). |
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| 作者姓名： | 张宇 |
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| 作者单位： | 中国科学院长春光学精密机械与物理研究所;中国科学院研究生院; |
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| 基金项目： | 国防科技预研基金资助项目(1040603) |
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| 摘 要： | 针对航空航天相机工作时由于曝光时间导致的图像质量下降问题,提出了行间转移面阵CCD的时间延迟积分(TDI)调光方法。选择行间转移面阵CCD KAI-16000作为成像器件,设计并完成了成像系统,利用FP-GA控制行间转移面阵CCD的驱动信号模式,将普通电子快门调光方法与TDI调光方法相结合,完成实时调光。实验结果表明:该成像系统无需延长曝光时间,依靠改变TDI工作模式下积分级数,解决了由于曝光时间不足导致的图像质量下降问题,图像信噪比(SNR)从13.22dB增加到33.74dB。
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| 关 键 词： | 时间延迟积分(TDI)模式 行间转移面阵CCD 像移补偿 积分级数 |
Study and realization of TDI light-adjusting for interline transfer progressive scan CCD |
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| ZHANG Yu.Study and realization of TDI light-adjusting for interline transfer progressive scan CCD[J].Journal of Shanghai University of Electric Power,2010(12). |
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| Authors: | ZHANG Yu |
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| Affiliation: | Changchun Institute of Optics,Fine Mechanics , Physics,Chinese Academy of Sciences,Changchun 130033,China, Graduate University,Beijing 100039, |
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| Abstract: | Aiming at the decreased image quality due to the exposure time,we propose an interline transfer area array CCD-time delay integral(TDI) light-adjusting method.We choose the interline transfer progressive scan CCD KAI-16000 as the imaging device,design and realize the imaging system using FPGA to control the driving signal mode of the interline transfer progressive scan CCD combined with the normal electronic shutter dimming method and the TDI dimming method.The experimental results indicate that the imaging... |
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| Keywords: | time delay integral(TDI) mode interline transfer area array CCD image motion compensation integral grade |
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