| 针对天空背景亮度测量的弱信号检测 |
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| 引用本文： | 贺巧妙,徐文清,詹杰. 针对天空背景亮度测量的弱信号检测[J]. 光学技术, 2011, 37(5): 637-640 |
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| 作者姓名： | 贺巧妙 徐文清 詹杰 |
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| 作者单位： | 1. 中国科学院安徽光学精密机械研究所大气光学研究中心,合肥230031;中国科学院大气成分与光学重点实验室,合肥230031;中国科学院研究生院,北京100039
2. 中国科学院安徽光学精密机械研究所大气光学研究中心,合肥230031;中国科学院大气成分与光学重点实验室,合肥230031 |
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| 摘 要： | 天空亮度分布在大气光学领域有着重要的应用.随着天空亮度测量仪器的迅速发展,对测量的精度和工作稳定性的要求也越来越高.为了提高测量仪器的动态测量范围,需要实现对探测器输出的弱信号的高精度测量.讨论了用高精度运算放大器对弱信号进行放大滤波处理,并采用一种低噪声高精度△-∑型模数转换器(ADC)来解决探测器中弱信号高精度测量...
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| 关 键 词： | 大气光学 天空亮度 弱信号测量 高精度运算放大器 △-∑型模数转换器(ADC) |
Weak signal measurement for sky background brightness measurement |
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| HE Qiaomiao , XU Wenqing , ZHAN Jie. Weak signal measurement for sky background brightness measurement[J]. Optical Technique, 2011, 37(5): 637-640 |
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| Authors: | HE Qiaomiao XU Wenqing ZHAN Jie |
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| Affiliation: | HE Qiaomiao1,2,3,XU Wenqing1,ZHAN Jie1,2(1.Center for Atmospheric Optics,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China)(2.Key Laboratory of Atmospheric Composition and Optical Radiation,China)(3.Graduate School,Beijing 100039,China) |
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| Abstract: | Distribution of sky brightness is significant in atmosphere optics.With the rapid development of sky brightness measurement instrument,the demands of the instrument's precision and long-term stability reaches to an entirely new level.In order to measure the sky brightness on the condition of weak illumination,the problem of weak signal measurement should be first solved.A solution based on High Precision Operational Amplifier and low noise high precision Δ-Σ ADC is given,it is proved that the solution is an effective means to solve the weak signal measurement in the field of optical measurement instruments' design. |
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| Keywords: | atmosphere optics sky brightness weak signal measurement high precision Operational Amplifier Σ-Δ ADC |
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