Analysis of the Uncertainty Propagation through Fitting Spectral Irradiance Data

Abstract. Uncertainties and correlations are propagated in absolute spectral irradiance scale, where a modified Planck’s radiation law is fitted to filter radiometer (FR) data. The lack-of-fit error component is included in the uncertainty analysis with the purpose of finding an optimal degree for the polynomial describing the effective emissivity of quartz-tungsten halogen lamps