Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back A Multi-Position Normalization Method for Identifying Remote Objects in the Infrared Range G.V. ALIEVA A multi-position normalization method for identifying remote objects by temperature in the IR range has been developed, allowing for the effect of air temperature on remote identification of an object by a temperature feature. To determine the air temperature, measurements are taken at a wavelength of λ = 6.25, where water vapor completely absorbs all the radiation emanating from the remote object under study, which allows determining the temperature of the surrounding atmospheric air and normalizing the results of object measurements at other wavelengths. Knowing the ambient temperature and conducting IR measurements of the object's radiation in the wavelength band (λmin–λmax) and at different distances l from the object, fi xing the function l = φ(λ), it is possible to formulate an optimization problem for calculating the optimal form of this function, at which the sum of all measured radiation fl uxes reaches a minimum. Based on the extremum feature of the formed objective functional and the calculated function φ(λ) opt, using the expression of Planck's law, it is possible to calculate the object's temperature, which means identification of the object under study by a temperature feature. Keywords: identification, temperature indicator, infrared measurements, atmospheric air, wavelength. DOI: 10.25791/pribor.5.2025.1580 Pp. 11-14.