周斌, 刘秉琦, 满波. 微光像增强器图像传递信噪比的测试研究[J]. 应用光学, 2004, 25(5): 60-61.
引用本文: 周斌, 刘秉琦, 满波. 微光像增强器图像传递信噪比的测试研究[J]. 应用光学, 2004, 25(5): 60-61.
ZHOU Bin, LIU Bing-qi, MAN Bo. Research on Testing Image Transfer Signal-to-Noise Ratio of Image Intensifer[J]. Journal of Applied Optics, 2004, 25(5): 60-61.
Citation: ZHOU Bin, LIU Bing-qi, MAN Bo. Research on Testing Image Transfer Signal-to-Noise Ratio of Image Intensifer[J]. Journal of Applied Optics, 2004, 25(5): 60-61.

微光像增强器图像传递信噪比的测试研究

Research on Testing Image Transfer Signal-to-Noise Ratio of Image Intensifer

  • 摘要: 图像传递信噪比是微光像增强器的重要特性参数.能够全面定量地表征像增强器在探测弱辐射图像时的综合性能,对于确定像增强器的图像探测灵敏闽具有重要意义。针对其测试原理.采用高灵敏度低噪声CCD器件作为像管输出图像的探测接收器.并引入数字图像处理技术。利用设计的测试系统实现了典型目标图像传递信噪比的自动测试.多次实验结果表明.陔测试系统具有测试过程自动快速及测试数据准确稳定的优点.相同测试条件下的不确定度优于±3%。

     

    Abstract: The image transfer signal-to-noise ratio isan important parameter which can characterize the combination property of image intensifier all-roundly and quantitatively when detecting the weakly radiative image.It has the important significance for determining the detection sensitivity threshold of image intensifier.Based on its test principle,a highly sensitive and low noise CCD is adopted as the output image detector and the digital image processing technology is introduced.The automatic test of image transfer signal-to-noise-ratio of typical target is realized by using a test system we designed.The experimental results getting with several test show that the test process is automatic and fast and the tested data is accurate and steady.The uncertainty is below +-3% in the same test condition.

     

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