Calibration Coefficients computation for IR Channels
The Calibration Coefficients Computation for IR Channels process calculates the calibration offset and gain that describe the linear relationship between pixel count and radiance for the thermal IR channels. These parameters are determined from the mean value of the Black Body (BB) pixel counts acquired during the calibration period and the mean BB temperatures of the same calibration period.
The calibration period is defined as the short interval of time in which the appropriate mean calibration coefficients are computed and applied to all packets belonging to this period – it is nominally set to 10 scan cycles.
Six sub-steps are defined: