| 像增强器光阴极在热冲击环境下噪声频谱分析 |
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| 引用本文： | 高有堂,徐源,乔建良,常本康. 像增强器光阴极在热冲击环境下噪声频谱分析[J]. 光学技术, 2010, 36(1) |
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| 作者姓名： | 高有堂 徐源 乔建良 常本康 |
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| 作者单位： | 南京理工大学,电子工程与光电技术学院,南京,210094;南阳理工学院,电子与电气工程系,南阳,473004;南阳理工学院,电子与电气工程系,南阳,473004;南京理工大学,电子工程与光电技术学院,南京,210094 |
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| 基金项目： | 自然科学基金资助项目(60871012);;总装备部某军品研究所科技攻关项目(JY50820041130) |
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| 摘 要： | 利用自行设计的CMETS005型检测与光谱测试系统对微光瞄准镜进行测试,完成了像增强器光阴极在热冲击环境下的噪声频谱特性测试。试验与分析结果表明:像增强器经过温度冲击后的噪声功率谱在0~1kHz范围内随频率增加而变化较大,呈1/f噪声特性。当环境温度升高时,光电阴极中的热致电流密度增大,从而导致微光瞄准镜观察景物图像时的对比度与鉴别率降低,最后引起夜视系统探测目标性能的下降。
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| 关 键 词： | 热冲击试验 光电阴极 频谱特性 噪声分析 |
Noise spectrum analysis of image intensifier photocathode in thermal shock environment |
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| GAO You-tang,XU Yuan,QIAO Jian-liang,CHANG Ben-kang. Noise spectrum analysis of image intensifier photocathode in thermal shock environment[J]. Optical Technique, 2010, 36(1) |
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| Authors: | GAO You-tang XU Yuan QIAO Jian-liang CHANG Ben-kang |
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| Affiliation: | 1.Institute of Electronic Engineering and Optical Technology;NanJing University of Science and Technology;NanJing 210094;China;2.Department of Electronic and Electrician Engineering;Nanyang Institute of Technology;Nanyang 473004;China |
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| Abstract: | The noise spectrum characteristics testing of the image intensifier photocathode in thermal shock environment is implemented by means of CMETS005 detection and spectrum testing system,which are self-designed for testing low-level-light(LLL)sight.The experimental results and analysis show that the noise power spectrum of the image intensifier fluctuates widely after the temperature shock within 0~1kHz with a larger increase in the frequency change,noise characteristics are 1/f.When the environment temperatur... |
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| Keywords: | thermal shock experiment photocathode spectrum characteristics noise analysis |
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