光学精密工程2017，Vol.25Issue(5)：1126-1134,9.DOI:10.3788/OPE.20172505.1126
多通道型偏振成像仪的偏振定标
Polarimetric calibration of multi-channel polarimetric imager
摘要
Abstract
A polarimetric calibration method based on non-polarized light source was proposed to solve the problem of polarimetric calibration of the multi-channel polarimetric imager.Through the study of the interaction between polarized beam and optics, the vector radiative transfer model of multi-channel polarimetric imager was deduced and the calibrated parameters were determined.The key parameters such as absolute radiometric calibration coefficients of center viewing field, polarization degree of optical lenses and relative transmittance with system low frequency were calibrated based on the vector radiative transfer model by application of polarimetric effects of the system with non-polarized light source.By analyzing the calibration result, the Mueller matrix of full field of view was solved.Furthermore, the accuracy of polarimetric calibration on typical field of view was verified with a light source with variable polarization degrees.The results show that the polarimetric calibration method based on non-polarized light source can effectively improve the polarization calibration efficiency of multi-channel polarimetric imager with the measured error of polarization less than 1% and the target degree of polarization less than 20%, thus meeting the requirements of measurement accuracy of atmospheric aerosol.关键词
偏振定标/偏振成像仪/多通道/穆勒矩阵/偏振效应Key words
polarimetric calibration/polarimetric imager/multi-channel/Mueller matrix/polarimetric effect分类
天文与地球科学引用本文复制引用
杨斌,颜昌翔,张军强,鞠学平..多通道型偏振成像仪的偏振定标[J].光学精密工程,2017,25(5):1126-1134,9.基金项目
国家863高技术研究发展计划资助项目(No.2011AA12A103) （No.2011AA12A103）
国家自然科学基金青年基金资助项目(No.61505199) （No.61505199）
