FIELD: signal systems ensuring safety of access to protected premises, systems of remote detection of objects hidden under clothes of men passing through inspection. SUBSTANCE: portable detector carrying antenna measures intensity of thermal radio radiation of different parts of human body. Change of intensity of thermal radio radiation establishes presence of foreign metal or nonmetal objects. Material absorbing radio waves fitted with heating element which temperature exceed temperature of human body is fixed on antenna to raise sensitivity of detector. EFFECT: raised sensitivity of portable detector. 1 cl, 1 dwg
展开▼