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Proceedings Paper • Open Access

IASI instrument: technical description and measured performances
Author(s): Ph. Hébert; D. Blumstein; C. Buil; T. Carlier; G. Chalon; P. Astruc; A. Clauss; D. Siméoni; B. Tournier

Paper Abstract

IASI is an infrared atmospheric sounder. It will provide meteorologist and scientific community with atmospheric spectra. The IASI system includes 3 instruments that will be mounted on the Metop satellite series, a data processing software integrated in the EPS (EUMETSAT Polar System) ground segment and a technical expertise centre implemented in CNES Toulouse.

The instrument is composed of a Fourier transform spectrometer and an associated infrared imager. The optical configuration is based on a Michelson interferometer and the interferograms are processed by an on-board digital processing subsystem, which performs the inverse Fourier transforms and the radiometric calibration. The infrared imager co-registers the IASI soundings with AVHRR imager (AVHRR is another instrument on the Metop satellite). The presentation will focus on the architectures of the instrument, the description of the implemented technologies and the measured performance of the first flight model.

CNES is leading the IASI program in association with EUMETSAT. The instrument Prime is ALCATEL SPACE.

Paper Details

Date Published: 21 November 2017
PDF: 9 pages
Proc. SPIE 10568, International Conference on Space Optics — ICSO 2004, 1056806 (21 November 2017); doi: 10.1117/12.2308007
Show Author Affiliations
Ph. Hébert, CNES (France)
D. Blumstein, CNES (France)
C. Buil, CNES (France)
T. Carlier, CNES (France)
G. Chalon, CNES (France)
P. Astruc, Alcalel Cannes (France)
A. Clauss, Alcalel Cannes (France)
D. Siméoni, Alcalel Cannes (France)
B. Tournier, Noveltis (France)


Published in SPIE Proceedings Vol. 10568:
International Conference on Space Optics — ICSO 2004
Josiane Costeraste; Errico Armandillo, Editor(s)

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