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Proceedings Paper

Characterization and performance of a LWIR polarimetric imager
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Paper Abstract

Polarimetric information has been shown to provide means for potentially enhancing the capacity of electro-optical sensors in areas such as target detection, recognition and identification. The potential benefit must be weighed against the added complexity of the sensor and the occurrence and robustness of polarimetric signatures. While progress in the design of novel systems for snapshot polarimetry may result in compact and lightweight polarimetric sensors, the aim of this work is to report on the design, characterization and performance of a polarimetric imager, primarily designed for polarimetric signature assessment of static scenes in the long wave thermal infrared. The system utilizes the division-of-time principle and is based on an uncooled microbolometer camera and a rotating polarizing filter. Methods for radiometric and polarimetric calibrations are discussed. A significant intrinsic polarization dependency of the microbolometer camera is demonstrated and it is shown that the ability to characterize, model and compensate for various instrument effects play a crucial role for polarimetric signature assessment.

Paper Details

Date Published: 5 October 2017
PDF: 16 pages
Proc. SPIE 10434, Electro-Optical Remote Sensing XI, 1043407 (5 October 2017); doi: 10.1117/12.2278502
Show Author Affiliations
Johan Eriksson, FOI-Swedish Defence Research Agency (Sweden)
David Bergström, FOI-Swedish Defence Research Agency (Sweden)
Ingmar Renhorn, Renhorn IR Consultant AB (Sweden)

Published in SPIE Proceedings Vol. 10434:
Electro-Optical Remote Sensing XI
Gary Kamerman; Ove Steinvall, Editor(s)

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