Combination of a dispersive spectral imager and of a static Fourier transform spectral imager: study of concept

Yann Ferrec

doi:10.1117/12.918449

14 May 2012 Combination of a dispersive spectral imager and of a static Fourier transform spectral imager: study of concept

Yann Ferrec

Author Affiliations +

Proceedings Volume 8390, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XVIII; 83900U (2012) https://doi.org/10.1117/12.918449
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

One of the drawbacks of slit-based dispersive imaging spectrometers is the need for an inertial measurement unit and a photogrammetric software to register the line images. On the contrary, since they perform instantaneous 2D imaging, static Fourier transform imaging spectrometers allow image registration from the images themselves. We propose to merge these two spectral imagers, by cutting the slit in a mirror that reflects the light toward the static Fourier transform spectral imager. Thus, the two spectrometers can be exactly co-registered. We present the preliminary design of such a dual-band hyperspectral imager (visible and near infrared), and an evaluation of the expected geometric and radiometric performances.

Citation Download Citation

Yann Ferrec "Combination of a dispersive spectral imager and of a static Fourier transform spectral imager: study of concept", Proc. SPIE 8390, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XVIII, 83900U (14 May 2012); https://doi.org/10.1117/12.918449

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KEYWORDS

Spectrometers

Imaging systems

Fourier transforms

Staring arrays

Signal to noise ratio

Visible radiation

Cameras

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