INSTRUMENT EFFECTS IN POLARIZED INFRARED IMAGES

被引:16
作者
SHAW, JA [1 ]
DESCOUR, MR [1 ]
机构
[1] UNIV ARIZONA,CTR OPT SCI,TUCSON,AZ 85721
关键词
INFRARED POLARIZATION; THERMAL IMAGING; REMOTE SENSING;
D O I
10.1117/12.201651
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
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 frictional 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%.
引用
收藏
页码:1396 / 1399
页数:4
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