FIELD: physics.
SUBSTANCE: invention relates to thermal physics. According to method identification mark is fixed at surface of search object; material for identification mark should have high degree of blackness. Operating principle of identification mark is the following: at impact of initiating emission of infrared or halogen lamp identification mark becomes active due to different optical properties of materials and appears as thermal contrast at screen of thermal imaging device.
EFFECT: absence of time interruptions in search (search can be carried out at any time light conditions) and exclusion of visible radiation highlighting by searchlight that ensures search confidentiality.
6 cl, 3 dwg
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