To get more accurate data on land and water use,
the next Landsat Earth observation satellite will use quantum-well
infrared photodetectors (QWIPs) for more precise remote temperature
measurements of the Earth's surface, from which evaporation and
transpiration — and thus, water usage — can be deduced. Learn more about
the Landsat Data Continuity Mission (LDCM) and the daunting technical
challenges it faces in this video overview.
source: globalspec.com
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