| 微光成像系统信噪比及图像探测特性研究 |
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| 引用本文： | 左昉,高稚允.微光成像系统信噪比及图像探测特性研究[J].兵工学报,2005,26(2):185-187. |
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| 作者姓名： | 左昉 高稚允 |
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| 作者单位： | 中国科学院,半导体研究所,北京,100083;北京理工大学,北京,100081 |
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| 摘 要： | 分析了电子轰击电荷耦合器件( EBCCD)微光成像系统的噪声源，建立了系统的信噪比模型，指出了在微光成像系统本身的增益和量子效率等性能确定的条件下，成像系统输出图像信噪比不仅仅与输入面照度有关，还与输入图像的空间频率有关，并通过实验得到了证明，指出了经典的图像探测方程（Rose方程）的不完善之处。
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| 关 键 词： | 电子技术 微光成像 电子轰击电荷耦合器件 信噪比 调制传递函数 |
| 文章编号： | 1000-1093(2005)02-0185-03 |
Research on SNR and Image Detecting Property of Low Light Level Imaging System |
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| ZUO Fang,GAO Zhi-yun.Research on SNR and Image Detecting Property of Low Light Level Imaging System[J].Acta Armamentarii,2005,26(2):185-187. |
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| Authors: | ZUO Fang GAO Zhi-yun |
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| Affiliation: | 1. Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
2. Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | In this paper, the noise sources of the EBCCD imaging system have been analyzed and a SNR model has been established. It shows that the SNR of output image is related not only to the input illuminance on the cathode but also to the spatial frequency of the input image. This has been proved by a series of experiment. Unperfectness of the detecting equation (Rose Equation) has been pointed out in this paper. |
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| Keywords: | electronic technology low light level imaging electron-bombarded charge coupled device signal to noise ratio modulation transfer function |
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