8 May 2018 Infrared absorption bands measured with an uncooled interferometric LWIR hyperspectral camera
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Abstract
This paper presents stand-off measurements with an interferometric LWIR hyperspectral camera, which is based on a corner-cube Michelson interferometer and an uncooled micro-bolometer. Spectrally resolved image data may provide a more robust discrimination and, moreover, the ability to also classify and identify materials. This is however dependent on three parameters: instrument, source intensity and vibrational bands. Strong vibrational bands in LWIR can be found in minerals (solid, crystalline substances), textile fibers (polymers) and hazardous substances like toxic chemicals and explosives (smaller molecules). Spectral bands measured e.g. in textile polymers may be used in applications such as discrimination and identification of camouflage. Experimental setups and measured vibrational bands are presented, along with interpretations of vibrational frequencies in LWIR.
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Thomas Svensson, Thomas Svensson, Tomas Hallberg, Tomas Hallberg, } "Infrared absorption bands measured with an uncooled interferometric LWIR hyperspectral camera", Proc. SPIE 10644, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXIV, 106440Y (8 May 2018); doi: 10.1117/12.2305915; https://doi.org/10.1117/12.2305915
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