Measuring degree of reflection of surfaces involves measuring radiation densities above target, reference surfaces, converting to electrical values, digitizing, forming target/reference signal ratio

摘要

The method involves measuring the radiation densities above target (1) and reference (2) surfaces, converting to electrical values and digitizing, then deriving the relative degree of reflection from the ratio of the target and reference signals using a channel-dependent radiometric calibration coefficient. The temperatures (T1,T2) of the target and reference surfaces are measured and taken into account.