| 红外遥感器自身引起的背景辐射研究 |
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| 引用本文： | 陈永和,陈洪达,傅雨田.红外遥感器自身引起的背景辐射研究[J].遥感学报,2014,18(Z1):25-29. |
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| 作者姓名： | 陈永和 陈洪达 傅雨田 |
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| 作者单位： | 中国科学院 上海技术物理研究所, 上海 200083;中国科学院大学, 北京 100049;中国科学院 上海技术物理研究所, 上海 200083;中国科学院大学, 北京 100049;中国科学院 上海技术物理研究所, 上海 200083 |
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| 摘 要： | 针对折反射光学型式的红外遥感器,结合各组件辐射的传输特性,建立系统自身辐射的计算模型,分析了遥感器自身热辐射所形成的背景辐射.通过将背景辐射与目标辐射相比较,分析其对红外探测的影响,并讨论了背景辐射影响的消除方法.最后,利用该模型分析了天宫一号高光谱成像仪红外观测谱段的背景辐射,并讨论了光瞳像差的影响.
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| 关 键 词： | 热辐射 背景辐射 红外光学系统 |
| 收稿时间： | 2014/1/10 0:00:00 |
Study on background of space infrared optical system caused by self-emission |
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| CHEN Yonghe,CHEN Hongda and FU Yutian.Study on background of space infrared optical system caused by self-emission[J].Journal of Remote Sensing,2014,18(Z1):25-29. |
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| Authors: | CHEN Yonghe CHEN Hongda and FU Yutian |
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| Institution: | Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China;University of Chinese Academy of Sciences, Beijing 100049, China;Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China;University of Chinese Academy of Sciences, Beijing 100049, China;Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China |
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| Abstract: | Thermal emission from Infrared Radiation (IR) instrument is an important background source, which will reduce Signal-to-Noise Ratio (SNR) of the system. It is necessary to estimate background radiation due to instrument's thermal emission in opt-mechanical design phase. An analytic model about thermal emission of reflect/refract combined optical system is established here, which is used to calculate background of space IR systems. Object signal is compared with background to show how background affects SNR. Finally, methods about removing background are discussed. |
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| Keywords: | thermal radiation thermal emission background radiation infrared optical system |
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