European Facility For Airborne Research April 4, 2025, 16:33
validation (Val): The process of assessing, by independent means, the quality of the data products derived from the system outputs in comparison with values from sampling at the earth’s surface of the same target or with modelled surrogates.
value-adder: Anyone altering data in order to facilitate thematic information extraction.
verification: Confirmation, through provision of objective evidence that the requirements have been fulfilled.
vicarious calibration: Radiometric calibration of a sensor by a method independent of that used to perform the initial laboratory calibration.
VIS: Visible - wavelength interval to which the human eye is sensitive.