The theory and techniques of radiometric calibration, as applied to instruments used to characterize remote target sources, are not well understood by many engineers and physicists engaged in measurement programs. This invited tutorial lecture is designed to show that the correct interpretation of field data is dependent upon an understanding of the theory of calibration. The instrument must be qualified in four nearly independent domains: (1) field of view, (2) spectral bandpass, (3) time, and (4) polarization.
Clair L. Wyatt,
"Theory And Methods Of Radiometric Calibration", Proc. SPIE 0095, Modern Utilization of Infrared Technology II, (15 November 1976); doi: 10.1117/12.955177; https://doi.org/10.1117/12.955177