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4 November 2004 IASI instrument: technical overview and measured performances
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The Infrared Atmospheric Sounding Interferometer (IASI) is a key payload element of the METOP series of European meteorological polar-orbit satellites. IASI will provide very accurate data about the atmosphere, land and oceans for application to weather predictions and climate studies. The IASI measurement technique is based on passive IR remote sensing using an accurately calibrated Fourier Transform Spectrometer operating in the 3.7 - 15.5 μm spectral range and an associated infrared imager operating in the 10.3-12.5 μm spectral range. The optical configuration of the sounder is based on a Michelson interferometer. Interferograms are processed by the on-board digital processing subsystem which performs the inverse Fourier Transform and the radiometric calibration. The integrated infrared imager allows the co registration of the IASI sounder with AVHRR imager on-board METOP. The first model (proto-flight) of IASI has successfully completed a verification program conducted at ALCATEL SPACE premises in Cannes. This paper provides a brief overview of the IASI mission, instrument architecture and key performances results. A companion paper1 by Alcatel provides more information on instrument design and development.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Denis Blumstein, Gilles Chalon, Thierry Carlier, Christian Buil, Philippe Hebert, Thierry Maciaszek, G. Ponce, Thierry Phulpin, Bernard Tournier, Denis Simeoni, Patrick Astruc, Alain Clauss, Gohkahn Kayal, and R. Jegou "IASI instrument: technical overview and measured performances", Proc. SPIE 5543, Infrared Spaceborne Remote Sensing XII, (4 November 2004);

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