Telecommunication and Observation
Since 2006, the IASI instrument has equipped European Metop satellites. Its strength: in addition to temperature and humidity, it measures more than 25 atmospheric components with great precision. CNES is working on its "evolution": IASI-NG so that these essential data for weather forecasts, pollution and climate monitoring do not stop.
Comat is developing the mechanical part of the SCan Mechanism (SCM) of the IASI-NG instrument (Infrared Atmospheric Sounding Interferometer, New Generation), which belongs to the series of MetOp- SG satellites (Meteorological Operational Satellite, Second Generation).
This development is performed in collaboration with ADS, in charge of building the IASI-NG instrument (and also of supplying the electronic part of the SCM).
Stop-and-stare motion to scan the Earth (across the spacecraft track)
Continuous motion to offset spacecraft velocity
Mechanical stress during launch
-25°C to +55°C (non-operational)
0°C to 35°C (operational)
Accuracy: ≤ 250 μrad (1σ)
Stability: ≤ 50 μrad (1σ)