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Calibration

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In the context of remote sensing, the Working Group on Calibration and Validation (WGCV) of the international Committee on Earth Observation Satellites (CEOS) defines calibration as the process of "quantitatively defining the system response to known controlled signal inputs"[1]. The main fundamental aspects that need to be calibrated are the sensor system's response to electromagnetic radiation as a function of:

  • wavelength and/or spectral band (spectral response);
  • the intensity of the input signals (radiometric response);
  • different locations across the instantaneous field-of-view and/or the overall scene (spatial response or uniformity);
  • different integration times and lens or aperture settings;
  • unwanted signals such as stray light and leakage from other spectral bands.[2]

 

References

[1] CEOS - www.ceos.org

[2] Canada Centre for Remote Sensing (CCRS) - http://www.ccrs.nrcan.gc.ca/optic/calval/primer_e.php

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Child Pages (2)

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