Design, calibration and characterization of a low-cost spatial Fourier transform LWIR hyperspectral camera with spatial and temporal scanning modes

Thomas Svensson; David Bergström; Linnea Axelsson; Martin Fridlund; Tomas Hallberg

doi:10.1117/12.2304628

8 May 2018 Design, calibration and characterization of a low-cost spatial Fourier transform LWIR hyperspectral camera with spatial and temporal scanning modes

Thomas Svensson, David Bergström, Linnea Axelsson, Martin Fridlund, Tomas Hallberg

Author Affiliations +

Proceedings Volume 10644, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXIV; 106440X (2018) https://doi.org/10.1117/12.2304628
Event: SPIE Defense + Security, 2018, Orlando, FL, United States

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.

Citation Download Citation

Thomas Svensson, David Bergström, Linnea Axelsson, Martin Fridlund, and 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); https://doi.org/10.1117/12.2304628

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