Articles | Volume 17, issue 5
https://doi.org/10.5194/amt-17-1419-2024
https://doi.org/10.5194/amt-17-1419-2024
Research article
 | 
07 Mar 2024
Research article |  | 07 Mar 2024

Polarization upgrade of specMACS: calibration and characterization of the 2D RGB polarization-resolving cameras

Anna Weber, Tobias Kölling, Veronika Pörtge, Andreas Baumgartner, Clemens Rammeloo, Tobias Zinner, and Bernhard Mayer

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Revised manuscript accepted for AMT
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Cited articles

Alexandrov, M. D., Cairns, B., Emde, C., Ackerman, A. S., and van Diedenhoven, B.: Accuracy assessments of cloud droplet size retrievals from polarized reflectance measurements by the research scanning polarimeter, Remote Sens. Environ., 125, 92–111, https://doi.org/10.1016/j.rse.2012.07.012, 2012. a
Bass, M., DeCusatis, C. M., Enoch, J. M., Lakshminarayanan, V., Li, G., MacDonald, C., Mahajan, V. N., and Stryland, E. V.: Handbook of Optics Volume I Geometrical and Physical Optics, Polarized Light, Components and Instruments, 3rd edn., McGraw-Hill, Inc., ISBN 978-0-07-162925-6, 2010. a, b
Baumgartner, A.: Characterization of Integrating Sphere Homogeneity with an Uncalibrated Imaging Spectrometer, in: Proc. WHISPERS 2013, Gainsville, Florida, USA, 25–28 June 2013, 1–4, https://elib.dlr.de/83300/ (last access: 27 February 2024), 2013. a
Baumgartner, A.: Grating monochromator wavelength calibration using an echelle grating wavelength meter, Opt. Express, 27, 13596–13610, https://doi.org/10.1364/OE.27.013596, 2019. a
Baumgartner, A.: Traceable Imaging Spectrometer Calibration and Transformation of Geometric and Spectral Pixel Properties, PhD thesis, Universität Osnabrück, https://doi.org/10.48693/38, 2022. a
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Short summary
In this work, we introduce the 2D RGB polarization-resolving cameras of the airborne hyperspectral and polarized imaging system specMACS. A full characterization and calibration of the cameras including a geometric calibration as well as a radiometric characterization is provided, allowing for the computation of absolute calibrated, georeferenced Stokes vectors rotated into the scattering plane. We validate the calibration by comparing sunglint measurements to radiative transfer simulations.