Read the summary and the most important questions on Remote sensing reader

• 1 Introduction remote sensing

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• What components are relevant in the measurement phase?

  - The source of the EM radiation
  - The path trough the atmosphere
  - The interaction with the object
  - The recording of the radiation by a sensor

• What components are covered by the second phase?

  - Tranmission, reception and (pre)processing of the recorded radiation
  - Interpretation and analysis of the remote sensing data
  - Creation of the final product, which is mostly stored as a GIS layer

• How can scattering effects be divided?

  - Rayleigh scattering
  - Mie scattering
  - Non-selective scattering

• What can happen when EM radiation hits an object at the earth's surface?

  - Transmitted
  - Absorbed
  - Reflected

• Which properties permit the observation and recognition of an object?

  - Shape and size of the object
  - Reflective and/or emissive properties
  - Spectral properties
  - The effects of polarisation
  - Temporal effects

• Where are pre-processing operations intended for?

  - To correct for sensor- and platform- specific radiometric and geometric distortions of data

• Which three categories of data can be derived from remote sensing?

  - The assignment of class labels to the individuel pixels or objets in an image, called classification
  - The estimation of object properties from remote sensing
  - The monitoring of the class labels or tje object properties with time

• How can information about the earth's surface and its features by obtained on basis of?

  - Spectral charasteristics
  - Spatial charasteristics
  - Temperal charasteristics

• 2 Spectral signatures

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• Which approaches are there to determine the reflectance?

  - Dividing the reflected radiation (Lr) by the incoming radiation (Li) for a certain wavelength or wavelength interval (usually with field radiometers)
  - Comparing the reflected radiation from an unknown object with that from a reference of which we know the reflectance properties (with airborne or spaceborn sensors)
  - Model the incoming radiation and atmospheric effects

• What are the three regions of the electromagnetic spectrum?

  - VIS
  - NIR
  - MIR/SWIR