This paper contains some results of research into IR-screening capability of smoke clouds generated during combustion process of varied pyro-technic formulations. The smoke compositions were made from some oxygen or oxygen-free mixtures containing metal and chloroorganic compounds or mixtures based on red phosphorus. Camouflage effectiveness of clouds generated by the formulations was investigated in laboratory conditions with an infrared camera. The technique employed enables determination of radiant temperature distributions in smoke colud treated as an energy equivalent of a grey body emission. The results of analysis of thermographs from the camera were the basis on which mixtures producing screens of the highest countermeasure for thermal imaging systems have been chosen.
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