Summary: Remote Sensing Reader Grs-10306 | J G P W Clevers

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• 1 Introduction Remote Sensing

• 1.3 The space era

• What was the first meteorological satellite?

  TIROS (Television Infrared Observation Satellite)

• 1.4 Concepts of remote sensing

• What are the componants of the measurement fase?

  The source of the EM radiation, the path through the atmosphere, the interation with the object, the recoring of the radiation by a sensor. 

• What happens with remote sensing?

  Electromagnetic radiation coming from an object is being measured and translated into information about the object or information on processes related to the object. 

• 1.4.1 Source of EM radiation

• What are we measuring from the VIS, NIR and MIR part of the EM spectrum?

  Solar radiation reflectedby objects at the earth's surface. 

• What is measured in the Thermal - infrared part? (TIR)

  Emitted radiation by objects at the earth's surface, albeit that this radiation is originating from the sun. 

• 1.4.2 The atmosphere

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• Most important processes influencing radiation? And what does it lead to?

  Scattering and absorption, leads to formation of diffuse radiation

• What are atmospheric windows?

  Parts of the spectrum where the atmospheric transmittance is high

• 1.4.3 Object - radiation interaction

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• What is spectral reflectance?

  The amount of reflected solar radiation as a function of wavelength

• What does the soil reflective curve look like and is affected by? 

  Smooth, narrow features by absorption by minerals and iron oxide, absorption by water in broader features

• Why is the reflectance low in the visable part of the spectrum of vegetation?

  Because the chlorophyll absorbs the radiation