| 科学级CCD相机的噪声分析及处理技术 |
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| 引用本文： | 李云飞,司国良,郭永飞. 科学级CCD相机的噪声分析及处理技术[J]. 光学精密工程, 2005, 13(Z1): 158-163 |
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| 作者姓名： | 李云飞 司国良 郭永飞 |
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| 作者单位： | 1. 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
2. 中国科学院,长春光学精密机械与物理研究所,吉林,长春,130033 |
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| 摘 要： | 为了降低科学级CCD相机的噪声,提高相机的成像质量,针对不同的噪声源,根据相应的噪声产生原理,设计了实用的噪声抑制电路和处理电路.应用于选用DALSA IL-E2型TDI-CCD 图像传感器自己开发的科学级CCD 相机,有效地降低了暗电流噪声,消除了复位噪声对真正信号的影响,使相机的成像质量得到提高.通过实验证明,该科学级CCD相机的输出信噪比能达到50 dB.
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| 关 键 词： | 科学级CCD相机 噪声分析 暗电流噪声 复位噪声 信噪比 |
| 文章编号： | 1004-924(2005)增-0158-06 |
| 收稿时间： | 2005-07-20 |
| 修稿时间： | 2005-07-20 |
Noise analyzing and processing for scientific grade CCD camera |
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| LI Yun-fei,SI Guo-liang,GUO Yong-fei. Noise analyzing and processing for scientific grade CCD camera[J]. Optics and Precision Engineering, 2005, 13(Z1): 158-163 |
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| Authors: | LI Yun-fei SI Guo-liang GUO Yong-fei |
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| Affiliation: | LI Yun-fei~ |
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| Abstract: | In order to reduce the noise of scientific grade CCD camera and improve the image quality,a practical noise restrain circuit and noise processing circuit have been designed in accordance with noise sources and noise-producing mechanisms.These circuits are used in a self-developed scientific grade CCD camera with the DALSA IL-E2 TDI-CCD imager,which have effectively reduced the dark current noise and eliminated the impact of reset noise on useful signals.Thus the imaging quality of the camera is improved.At last,it verifies the conclusion that output S/N of scientific grade CCD camera signal can attain to 50 dB. |
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| Keywords: | scientific grade CCD camera noise analyzing dark current noise reset noise signal noise ratio |
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