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On-ground calibration of DESIS: DLR's Earth Sensing Imaging Spectrometer for the International Space Station (ISS)
Author(s): Ilse Sebastian; David Krutz; Andreas Eckardt; Holger Venus; Ingo Walter; Burghardt Günther; Michael Neidhardt; Ralf Reulke; Rupert Müller; Mathias Uhlig; Sandra Müller; Thomas Peschel; Simone Arloth; Matthias Lieder; Friedrich Schrandt
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Paper Abstract

The DLR Earth Sensing Imaging Spectrometer (DESIS) is a new space-based hyperspectral instrument developed by DLR and operated under collaboration between the German Aerospace Center (DLR) and Teledyne Brown Engineering (TBE). DESIS will be mounted on the International Space Station on the MUSES platform in 2018 and will provide hyperspectral Earth Observation in the wavelength range from visible to near-infrared with high resolution and near global coverage. TBE provides the platform and infrastructure on the ISS. DLR developed the instrument, while the optical system was fabricated and pre-aligned by the Fraunhofer Institut fur Angewandte Optik und Feinmechanik (IOF). This paper presents the on-ground adjustment, focusing and calibration approach for DESIS done at the optical lab of the Institut fur Optische Sensorsysteme (DLR). The optical lab set-up will be described in detail. Selected calibration results like detector Modulation Transfer Function (MTF) and linearity, optics MTF and wave front, focus position, smile and keystone measurement, instrument spatial and spectral MTF, and absolute radiometric calibration will be presented. The spectral and radiometric in- ight calibration approach of the DESIS calibration unit (CAL) based on stabilized Light Emitting Diode (LED) arrays will be demonstrated. In addition, the innovative pointing unit (POI) in front of the instrument and its pointing accuracy will be introduced. Finally imaging quality and accuracy of the sensor calibration will be evaluated with respect to foreseen applications.

Paper Details

Date Published: 9 May 2018
PDF: 12 pages
Proc. SPIE 10680, Optical Sensing and Detection V, 1068002 (9 May 2018); doi: 10.1117/12.2307188
Show Author Affiliations
Ilse Sebastian, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
David Krutz, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Andreas Eckardt, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Holger Venus, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Ingo Walter, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Burghardt Günther, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Michael Neidhardt, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Ralf Reulke, Humboldt-Univ. zu Berlin (Germany)
Rupert Müller, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Mathias Uhlig, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Sandra Müller, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Thomas Peschel, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Simone Arloth, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Matthias Lieder, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Friedrich Schrandt, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)


Published in SPIE Proceedings Vol. 10680:
Optical Sensing and Detection V
Francis Berghmans; Anna G. Mignani, Editor(s)

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