| ICCD系统中对像增强器制冷降噪效果的分析 |
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| 引用本文： | 沈飞,刘广荣,金伟其,王志宏,曹峰梅.ICCD系统中对像增强器制冷降噪效果的分析[J].光学技术,2005,31(3):434-436. |
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| 作者姓名： | 沈飞 刘广荣 金伟其 王志宏 曹峰梅 |
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| 作者单位： | 北京理工大学,光电工程系,北京,100081;北方夜视技术股份有限公司昆明分公司,昆明,650114 |
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| 基金项目： | 国防重点预研项目(41302020302) |
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| 摘 要： | 在ICCD摄像机上加装一个半导体制冷器,对像增强器进行实时降温处理,以降低系统时空域噪声。为了评价半导体制冷器对ICCD系统噪声的影响,运用三维噪声模型对制冷前后系统的时空域噪声和信噪比进行了分析,发现半导体制冷器能够有效地降低像管的噪声。
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| 关 键 词： | 像增强CCD 半导体 制冷器 图像噪声 三维噪声模型 信噪比 |
| 文章编号： | 1002-1582(2005)03-0434-03 |
| 修稿时间： | 2004年6月5日 |
Research of reducing the ICCD system noise with TE cooler |
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| SHEN Fei,LIU Guang-rong,JIN Wei-qi,WANG Zhi-hong,CAO Feng-mei.Research of reducing the ICCD system noise with TE cooler[J].Optical Technique,2005,31(3):434-436. |
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| Authors: | SHEN Fei LIU Guang-rong JIN Wei-qi WANG Zhi-hong CAO Feng-mei |
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| Institution: | SHEN Fei~1,LIU Guang-rong~1,JIN Wei-qi~1,WANG Zhi-hong~2,CAO Feng-mei~1 |
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| Abstract: | In order to improve the SNR of low light imaging system, the semi_conductor cooler was equipped with the ICCD, lowering temperature in real time and decreasing the space_time noise of the system. The 3D noise model was used to evaluate the action of the cooler to the ICCD noise by calculating the time domain noise, the space domain noise and the SNR of the system before and after the refrigeration. The test data validated that the semi_conductor cooler can effectively reduce the noise of the low light level imaging system. |
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| Keywords: | ICCD semi_conductor cooler imaging noise 3D noise model SNR |
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