Calibration campaign of SPEXone Second Generation: early results and instrument performance

Matej Arko; Jochen Campo; Marijn Siemons; Robbert Winkelman; Alexander Eigenraam; Paul Tol; Mario Vretenar; Jeroen Rietjens; Martijn Smit; Jos Dingjan; Raj Nalla; Jeroen Peters; Berit Ahlers; Jens Löhring; Ralf Kohlhaas; Bastiaan van Diedenhoven; Ruud Hoogeveen; Aaldert van Amerongen

doi:10.1117/12.3031658

20 November 2024 Calibration campaign of SPEXone Second Generation: early results and instrument performance

Matej Arko, Jochen Campo, Marijn Siemons, Robbert Winkelman, Alexander Eigenraam, Paul Tol, Mario Vretenar, Jeroen Rietjens, Martijn Smit, Jos Dingjan, Raj Nalla, Jeroen Peters, Berit Ahlers, Jens Löhring, Ralf Kohlhaas, Bastiaan van Diedenhoven, Ruud Hoogeveen, Aaldert van Amerongen

Author Affiliations +

Proceedings Volume 13192, Sensors, Systems, and Next-Generation Satellites XXVIII; 131920Q (2024) https://doi.org/10.1117/12.3031658
Event: Remote Sensing, 2024, Edinburgh, United Kingdom

Abstract

SPEXone is a compact multi-angle spectropolarimeter that measures both spectral intensity and the state of linear polarization of light scattered by aerosols in the Earth’s atmosphere at five different viewing angles simultaneously. This enables a very accurate quantification and characterization of atmospheric aerosols, helping us to better understand their effects on global climate and air quality. Building upon the success of its predecessor SPEXone, which has been launched in 2024 as part of the NASA PACE observatory, a second and improved instrument, SPEXone Second Generation, has been built within the ESA PRODEX program. Most recently, the integrated instrument underwent full on-ground characterization and calibration in ambient conditions at SRON. This contribution gives an overview of the measurements and presents preliminary results from the characterization and calibration campaign, focusing on the instrument performance. A few key performance aspects such as straylight, spatial and spectral resolution are discussed, with data from SPEXone for PACE serving as a comparison. The result of the analysis shows excellent image quality and indicates an improvement in the amount of diffuse straylight.

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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Matej Arko, Jochen Campo, Marijn Siemons, Robbert Winkelman, Alexander Eigenraam, Paul Tol, Mario Vretenar, Jeroen Rietjens, Martijn Smit, Jos Dingjan, Raj Nalla, Jeroen Peters, Berit Ahlers, Jens Löhring, Ralf Kohlhaas, Bastiaan van Diedenhoven, Ruud Hoogeveen, and Aaldert van Amerongen "Calibration campaign of SPEXone Second Generation: early results and instrument performance", Proc. SPIE 13192, Sensors, Systems, and Next-Generation Satellites XXVIII, 131920Q (20 November 2024); https://doi.org/10.1117/12.3031658

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