FIELD: physics, signalling.
SUBSTANCE: invention relates to the counter-terrorism field and can be used in systems for protecting facilities. The apparatus for detecting portable fragmentation explosives comprises a microwave transmitting device with frequency f1, a microwave transmitting device with frequency f2, a microwave receiving device at second-order combination frequencies and a microwave receiving at third-order combination frequencies. The apparatus further includes units of a device for measuring the ratio of the amplitude of signals at second- and third-order combination frequencies, a low-frequency contact noise detector and a periodic infrasound component detector.
EFFECT: invention increases the range of detecting fragmentation explosives on the background of interference from electronic components.
3 cl, 1 dwg
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