FIELD: measuring instruments.
SUBSTANCE: method consists in taking an image of a surface under study in the visible or infrared range of the emission spectrum, transforming the image into colour components in a digital form, and, synchronously with the image taking, measuring the temperature, e.g. by means of thermocouples, in several reference point of the surface under study and forming dependencies of the temperature on values of the colours components or their combinations, and the temperature in the other points of the surface under study is determined basing on these dependencies. Moreover, the reference points are arranged in the points of the surface under study where temperature is distributed over the range of possible temperature changing in flight conditions under study.
EFFECT: increase of temperature measurement accuracy.
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