Laboratory Calibration of a Multi-Band Polarization Imager

Abstract

Abstract: The integrated design and laboratory calibration method of a multi-band polarization
imager were presented. The polarization calibration accuracy was validated by a
polarized light source whose degrees of polarization (DOP) is adjustable. The results
showed that the relative DOP errors of 490 nm and 670 nm band are less
than 1.6% and 1.7%, respectively, when the DOP of the polarized light source
is less than 0.6. The software system of the multi-band polarization imager was
designed as well, and the function modules and automatic observation algorithm
of the software were described in detail. Finally, the field operation stability
of the instrument as well as the function and practicability of software design
were verified by its field depolyment in Dunhuang radiation calibration site, Gansu, China.

Key words: polarization imager, polarization calibration, Dunhuang radiation calibration site;, pixel registration

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[1]	KANG Qing1, YUAN Yinlin1, WENG Jianwen1,2, DING Lei1, LI Jianjun1, WU Haoyu1, HONG Jin1, ZHENG Xiaobing1. System-Level Polarized Calibration Methods in Laboratory of Directional Polarization Camera [J]. Journal of Atmospheric and Environmental Optics, 2019, 14(1): 36-48.
[2]	KANG Qing, YUAN Yin-Lin, LI Jian-Jun, WU Hao-Yu, ZHENG Xiao-Bing, YAN Jing. Polarization Calibration Methods of Channel-Type Polarization Remote Sensor [J]. Journal of Atmospheric and Environmental Optics, 2015, 10(4): 343-349.