Share Email Print

Proceedings Paper

MERTIS: from laboratory to Mercury
Author(s): Jörn Helbert; Thomas Säuberlich; Carsten Paproth; Ingo Walter; Gabriele Arnold; Harald Hiesinger
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

MERTIS (MERcury Thermal infrared Imaging Spectrometer) is an advanced infrared remote sensing instrument that is part of the ESA mission BepiColombo to planet Mercury. The enabling technology that allows sending the first spectrometer for the thermal infrared spectral range to Mercury is an uncooled microbolometer. With this detector the instrument can be operated in the hot environment of Mercury without the need for a cryogenic cooling system. The challenge is the characterization and calibration of the instrument. We are reporting on the ongoing calibration efforts including laboratory measurements of analogue materials, end-to-end simulations and a detailed characterization of all components and discuss each of the three elements. The measurement of planetary analogue materials in grain sizes <25 μm and at temperatures up to 500°C relevant for Mercury's surface provide a realistic input signal for the end-to-end simulation. A radiometric and a spectroscopic breadboard model of MERTIS are used to derive all necessary parameters of the instrument, for example the spectral resolution or the wavelength registration on the detector. This parameters support setting up the end-to-end simulation which can then process the spectra of the planetary analog materials as input signal to create a realistic representation of the MERTIS output signal.

Paper Details

Date Published: 3 September 2008
PDF: 14 pages
Proc. SPIE 7082, Infrared Spaceborne Remote Sensing and Instrumentation XVI, 70820L (3 September 2008); doi: 10.1117/12.798392
Show Author Affiliations
Jörn Helbert, DLR (Germany)
Thomas Säuberlich, DLR (Germany)
Carsten Paproth, DLR (Germany)
Ingo Walter, DLR (Germany)
Gabriele Arnold, WWU Münster (Germany)
Harald Hiesinger, WWU Münster (Germany)

Published in SPIE Proceedings Vol. 7082:
Infrared Spaceborne Remote Sensing and Instrumentation XVI
Marija Strojnik, Editor(s)

© SPIE. Terms of Use
Back to Top