Transcription of Fundamentals of Satellite Remote Sensing - NASA
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National Aeronautics and Space AdministrationPawan Gupta, and Melanie Follette-CookSatellite Remote Sensing of Dust, Fires, Smoke, and Air Quality, July 10-12, 2018 Fundamentals of Satellite Remote SensingNASA s Applied Remote Sensing Training Program2 ObjectivesBy the end of this presentation, you will be able to: outline what the electromagnetic spectrum is outline how satellites detect radiation name the different types of Satellite resolutionsNASA s Applied Remote Sensing Training Program3 What is Remote Sensing ? Collecting information about an object without being in direct physical contact with itNASA s Applied Remote Sensing Training Program4 What is Remote Sensing ?
• Imagery data are represented by positive digital numbers that vary from 0 to (one less than) a selected power of 2 • The maximum number of brightness levels available depends on the number of bits (represents radiometric resolution) used in representing the energy recorded • The larger this number, the higher the radiometric resolution
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