Radiometric Modelling

Definition of requirements for optical systems require the adequate analysis and assessment of scientific or observational performance needs to translate them adequately in hardware specific design constraints.

In the most typical system in optical space applications (imagers, spectrometers, photometers, coronographs,...) the creation of budgets implies the definition of a radiometric model  that calculates the expected level of radiation in the system from a source or scene.

In this lectures, we will cover:

  • Theoretical basis of the emission, transmission and detection of radiation
  • Definition of simplified models of the signal-to-noise ratio of an optical system
  • Application to astronomical observations of point objects and extended objects
  • Application to high contrast scenes in Earth Observation Missions.


  • Practical exercise: Radiometric model creation based on a real mission example.