radiometric_type in Radiometric_​Correction

Name: radiometric_typeVersion Id:
Description: The radiometric_type defines the specific type of radiance measurement. Possible values include "Radiance", "Radiance Factor", "Spectral Radiance", "Scaled Spectral Radiance", and "No CFA". Note: There are many more possible values, and this definition can be updated to include more examples over time.
Namespace Id: imgSteward: imgClass Name: Radiometric_​CorrectionType: ASCII_​Short_​String_​Collapsed
Minimum Value: NoneMaximum Value: NoneMinimum Characters: 1Maximum Characters: 255
Unit of Measure Type: NoneDefault Unit Id: NoneAttribute Concept: NoneConceptual Domain: SHORT_STRING
Status: ActiveNillable: falsePattern: None
Permissible Value(s)ValueValue Meaning
 No CFAIndicates the image is not and has never been CFA encoded. In this case, Color_Filter_Array would simply not be present in the label. This value is present in case it needs to be explicitly stated that there is no CFA.
 Radiance FactorRadiance Factor also known as I/F or IOF. Some images are scaled to absolute radiance units, then divided by the absolute radiance of the Sun at the top of the planet's atmosphere to generate radiance factor, or "I over F" values, where I is the radiance from the surface (scene) and F is the radiance from the Sun at the top of the planet's atmosphere.
 Scaled Spectral RadianceRadiometric correction results are expressed as Spectral Radiance, but have subsequently been scaled in some way to compensate for photometric effects (for example, adjusting the brightness as if the sun was at zenith or correcting for the impact of atmospheric opacity (tau)).
 Spectral RadianceRadiometric correction results are expressed in units of Spectral Radiance (generally W/m^2/sr/nm).