The radiometric unit to collimators for reproduction of difference values of radiances and radiation temperatures

摘要

The method for reproduction of difference values of radiances (DR) and difference values of radiation temperatures (DRT) for calibration of optoelectronic scanning equipment is proposed. The method is based on using of additional infrared source irradiating one of two diffuse-reflecting plates preliminarely equalized in radiance and placed in isothermical volume of two-channel radiometric unit used to light-up the mirror test-object of collimator. The relation between spectral and integral magnitudes of DRT is considered.