The EnMAP hyperspectral imaging spectrometer: instrument concept, calibration, and technologies
2008
The Environmental Mapping and Analysis Program (EnMAP) is a German space based hyperspectral mission planned
for launch in 2012. The hyperspectral instrument covers the wavelength range from 420nm to 2450nm using a dual
spectrometer layout. Both f/3 spectrometers employ a prism disperser for maximum throughput and are linked to the
common foreoptics by a micromechanical field splitter. Together with custom designed silicon and MCT-based detector
arrays this sensor design exhibits a peak system SNR of 1000 at 495nm and of more than 300 at 2200nm. Stable and
precise in orbit performance is ensured by a multi loop thermal control system and a system calibration which relies on
onboard sources as well as a full aperture diffuser.
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