Surrey Satellite chooses SWIR sensor arrays from Sofradir for TROPOMI instrument on Earth-monitoring satellite
CHATENAY-MALABRY, France, 1 June 2011. Space sensors experts at Surrey Satellite Technology Ltd. in Guildford, England, needed shortwave infrared (SWIR) sensors for the Tropospheric Monitoring Instrument (TROPOMI) payload on the European Space Agency's Sentinel 5 Precursor satellite. They found their solution from Sofradir in Chatenay-Malabry, France. Sofradir will deliver mercury cadmium telluride SWIR arrays for the satellite's TROPOMI payload -- an ultraviolet, visible, near-infrared, and shortwave infrared imaging spectrometer that will measure the chemistry of Earth's atmosphere.
Sofradir will provide an uncooled SWIR array for the TROPOMI sensor payload, which will receive passive cooling in the satellite. The uncooled version is more reliable and uses less power than a cooled SWIR array, Sofradir officials say.