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The incoming light beams are splitted into different wavelengths and reflected into the IR-sensor and then the different semiconductors absorb them in their rispectable operating wavelengths. These portions of the reflected beam power electrons to move onto the the next conduction band, thus causing that particular semiconductor to produce a current. This current is then registered and analyzed.
Sensitivity
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Range
The IMG is able to detect and monitor the vertical and spatial distribution of many greenhouse gases, such as CO2,CH4 and O3, through its spectrometer. Its wide range covers the infrared spectrum from 3.3 to 15 µm with a very high resolution of 0.1 cm-1.
Working environment
The detectors of the IMG are cooled to under 80 K with a Stirling-cycle cooler. The actual temperature may vary according to the thermal condition of the spacecraft. The vibrations caused by the cooler compressor are absorbed through a suspension mechanism. The expected lifetime of the cooler is 25000 hours, about 3 years.
Precision
!!ADD THE SENSOR DETAILS!! CAN BE FOUND FROM LINK OF SOURCE 4!!---
Detection and monitoring of the vertical and spatial distribution of:
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