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Spectral Measurements of Reflectance, Radiance, and Emissivity
註釋An important concept in military camouflage is to match the radiative surface properties of targets with those of the background. This match has to be accomplished over a wide range of the electromagnetic spectrum as well as for a range of weather conditions. The first step in the matching procedure is to measure the surface properties of targets and backgrounds. This report documents research for developing a capability to measure radiative surface properties in the visual, near infrared, and thermal infrared portions of the electromagnetic spectrum. The measurements were done with a Barnes Spectral Master Infrared Research Radiometer, Model 12-550. This report explains the procedure developed inhouse for calibrating the instrument and suggests procedures for measuring reflectance, radiance, and emissivity. To illustrate the procedures, measurements of and rock samples from Moab, Utah, are included. (Author).