Polarization uncertainty and error equivalent radiance for an ultra-broadband, wide field-of-view push-broom imaging radiometer

Jason Mudge; Adam Phenis; Andrew Nichols; Alicia Maccarrone; Alexander Cheff Halterman

doi:10.1117/12.2631991

30 September 2022 Polarization uncertainty and error equivalent radiance for an ultra-broadband, wide field-of-view push-broom imaging radiometer

Jason Mudge, Adam Phenis, Andrew Nichols, Alicia Maccarrone, Alexander Cheff Halterman

Author Affiliations +

Proceedings Volume 12232, Earth Observing Systems XXVII; 1223206 (2022) https://doi.org/10.1117/12.2631991
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Abstract

In the past, many spaceborne, Earth viewing radiometers have had a fairly narrow optical field-of-view (FoV) and are scanned in the cross-track direction to provide the required coverage. These (point) scanners swing delicate optics and lack a full instantaneous cross-track coverage. To get around these undesirable issues, the cross-track direction can be optically a wide FoV telescope utilizing freeform optics [Phenis et al., Proc. of SPIE, 12078(12078J), 2021] along with a corresponding focal plane array (FPA). However, there are some unintended and undesirable consequences of wide FoV telescopes particularly when there is a significant lack of symmetry due, in part, to off-axis viewing. One of these consequences is a polarization bias imparted on the light due to the optics as it progresses along the optical chain. Here we develop the polarimetric radiometric uncertainty and a polarimetric error equivalent radiance which can be used in the optical design and radiometric error budget for imaging radiometers.

Conference Presentation

Citation Download Citation

Jason Mudge, Adam Phenis, Andrew Nichols, Alicia Maccarrone, and Alexander Cheff Halterman "Polarization uncertainty and error equivalent radiance for an ultra-broadband, wide field-of-view push-broom imaging radiometer", Proc. SPIE 12232, Earth Observing Systems XXVII, 1223206 (30 September 2022); https://doi.org/10.1117/12.2631991

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