Assessing polarization effects for the Airborne imaging spectrometer APEX

In the scope of hyperspectral airborne imaging spectrometer (APEX) design activities, the acceptable sensitivity of linear polarization of the spectrometer is analyzed by assessing the amount of polarization of reflected light in the atmosphere-surface system. A large number of calculations is performed for a wide variaty of viewing geometries to study the influences of aerosol models, natural surfaces and flight altitudes over the spectral range from the near-UV to the short-wave infrared (SWIR). Thereinafter the design of the imaging spectrometer is outlined accounting for these requirements and a method of partially correcting the instrument polarization sensitivity is briefly introduced. APEX design and post-processing capabilities will enable to reduce the influence of polarization sensitivity of at-sensor radiance and its higher-level products generated for most of the observation conditions. DOI: https://doi.org/10.5194/ars-4-323-2006 Posted at the Zurich Open Repository and Archive, University of Zurich ZORA URL: https://doi.org/10.5167/uzh-61750 Published Version Originally published at: Böttger, U; Nieke, J; Schläpfer, D (2006). Assessing polarization effects for the Airborne imaging spectrometer APEX. Advances in Radio Science, 4:323-328. DOI: https://doi.org/10.5194/ars-4-323-2006 Adv. Radio Sci., 4, 323–328, 2006 www.adv-radio-sci.net/4/323/2006/ © Author(s) 2006. This work is licensed under a Creative Commons License. Advances in Radio Science Assessing polarization effects for the Airborne imaging