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电晕探测紫外ICCD相机图像噪声分析与处理

Noise analysis and processing of ultraviolet ICCD for corona detection

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【作者】 闫丰于子江于晓娄洪伟隋永新杨怀江

【Author】 YAN Feng~(1,2),YU Zi-jiang~(1,2),YU Xiao~3,LOU Hong-wei~1,SUI Yong-xin~1,YANG Huai-jiang~1(1.State Key Laboratory of Applied Optics,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;2.Graduate School of the Chinese Academy of Sciences,Beijing 100039,China;3.Information Center,Aviation University of Air Force,Changchun 130022,China)

【机构】 中国科学院长春光学精密机械与物理研究所空军航空大学信息中心中国科学院长春光学精密机械与物理研究所 吉林长春130033中国科学院研究生院北京100039吉林长春130033吉林长春130022

【摘要】 分析了日盲电晕探测中探测器紫外ICCD相机噪声的构成特性,利用试验方法统计了PROXITRONIC公司第二代紫外ICCD相机不同增益下的光电阴极暗电子发射散粒噪声水平,提出了基于统计数据的阴极噪声的抑制方法,实现了对紫外ICCD相机散粒噪声的抑制。将此方法应用到电晕探测过程,实验结果证明了该方法对图像噪声的抑制有效,保持了相机的动态范围。

【Abstract】 The noise sources and its characteristics of a ultraviolet camera based on generation Ⅱ ICCD were analyzed.Ultraviolet ICCD made by PROXITRONIC company was tested to give shot noise statistic data of the photocathode,which indicates the relationship between various MCP gain and shot noise created by photocathode.Based on statistic data,a restraining photocathode noise method was introduced to restrain the photocathode shot noise and decrease the affection on image processing.Application of this method to corona detection,results show that this method is a availability in restraining image noise and keeping the dynamic range of the camera.

【基金】 中国科学院国防创新基金;中国科学院长春光学精密机械与物理研究所创新基金资助项目
  • 【文献出处】 光学精密工程 ,Optics and Precision Engineering , 编辑部邮箱 ,2006年04期
  • 【分类号】TP391.41
  • 【被引频次】91
  • 【下载频次】612
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