Instrument effects in polarized infrared images

Joseph A. Shaw; Michael R. Descour

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Instrument effects in polarized infrared images

机译：偏振红外图像中的仪器效果

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摘要

We describe three instrument effects that cause polarized infrared images of a blackbody source to exhibit intriguing polarization dependence and image nonuniformity. The origins of these problems are reflection of background radiation from the wire-grid polarizer and fric-tional heating of the polarizer mount. Our model shows that the two surfaces of a wire-grid polarizer act like a partial polarizer-analyzer pair for reflected radiance. These effects must be considered carefully in applications such as polarimetric remote sensing, which require calibration uncertainties less than 1 %.

机译：我们描述了三种仪器效应，这些效应导致黑体源的偏振红外图像表现出令人感兴趣的偏振依赖性和图像不均匀性。这些问题的根源是线栅偏振器反射的背景辐射以及偏振器底座的摩擦加热。我们的模型表明，线栅偏振器的两个表面的作用类似于反射辐射的部分偏振器-分析器对。在诸如偏振遥感之类的应用中，必须仔细考虑这些影响，这些应用要求校准不确定度小于1％。

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来源
《Optical engineering》 |1995年第5期|p.1396-1399|共4页
作者
Joseph A. Shaw; Michael R. Descour;
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作者单位

NOAA Environmental Technology Laboratory 325 Broadway Boulder, Colorado 80303;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类光学仪器;
关键词
infrared polarization; thermal imaging; remote sensing;

机译：红外偏振;热成像;遥感;

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Instrument effects in polarized infrared images

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