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Summary Remote Sensing reader GRS-10306

- J G P W Clevers
135 Flashcards & Notes
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A snapshot of the summary - Remote Sensing reader GRS-10306 Author: J G P W Clevers

  • 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

  • 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

  • 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

     

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