8 May 2018 Design, calibration and characterization of a low-cost spatial Fourier transform LWIR hyperspectral camera with spatial and temporal scanning modes
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Abstract
Hyperspectral imaging in the longwave infrared region (LWIR) offers a unique day and night sensor capability currently not available in other spectral ranges. Current proliferation of the technology is however often limited by the size, weight, power and cost (SWaP-C) requirements of the available instruments. This paper presents a low-cost spatial Fourier Transform LWIR hyperspectral imaging camera, based on a corner cube Michelson interferometer and an uncooled microbolometer. In addition to conventional spatial pushbroom scanning, e.g. provided by a moving platform, the current interferometric setup can use temporal scanning of a stationary field-of-view due to a spatially offset stepper motor controlled corner cube retroreflector. The design and calibration and a characterization of the instrument are presented. Applications and future modifications are also discussed.
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Thomas Svensson, David Bergström, Linnea Axelsson, Martin Fridlund, Tomas Hallberg, "Design, calibration and characterization of a low-cost spatial Fourier transform LWIR hyperspectral camera with spatial and temporal scanning modes", Proc. SPIE 10644, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXIV, 106440X (8 May 2018); doi: 10.1117/12.2304628; https://doi.org/10.1117/12.2304628
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