Uncertainties of atmospheric polarimetric measurements with sun-sky radiometers induced by errors of relative orientations of polarizers - Archive ouverte HAL Access content directly
Journal Articles Journal of Quantitative Spectroscopy and Radiative Transfer Year : 2018

Uncertainties of atmospheric polarimetric measurements with sun-sky radiometers induced by errors of relative orientations of polarizers

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1
Li Li
Zhengqiang Li
  • Function : Author
Kaitao Li
  • Function : Author
Bin Sun
  • Function : Author
Yanke Wu
  • Function : Author
Hua Xu
  • Function : Author
Yisong Xie
  • Function : Author
Manfred Wendisch

Abstract

In this study errors of the relative orientations of polarizers in the Cimel polarized sun-sky radiometers are measured and introduced into the Mueller matrix of the instrument. The linearly polarized light with different polarization directions from 0° to 180° (or 360°) is generated by using a rotating linear polarizer in front of an integrating sphere. Through measuring the referential linearly polarized light, the errors of relative orientations of polarizers are determined. The efficiencies of the polarizers are obtained simultaneously. By taking the error of relative orientation into consideration in the Mueller matrix, the accuracies of the calculated Stokes parameters, the degree of linear polarization, and the angle of polarization are remarkably improved. The method may also apply to other polarization instruments of similar types.
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Dates and versions

insu-03686260 , version 1 (02-06-2022)

Licence

Attribution - NoDerivatives - CC BY 4.0

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Li Li, Zhengqiang Li, Kaitao Li, Bin Sun, Yanke Wu, et al.. Uncertainties of atmospheric polarimetric measurements with sun-sky radiometers induced by errors of relative orientations of polarizers. Journal of Quantitative Spectroscopy and Radiative Transfer, 2018, 209, pp.10-18. ⟨10.1016/j.jqsrt.2018.01.013⟩. ⟨insu-03686260⟩
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