FIELD: physics.
SUBSTANCE: device includes seismic receiver, voice filter, envelope detector, indication calculation unit and surveillance interval generator, correlation unit and reference signal matrix, maximum vector detector and reference code register, threshold device and 'AND' circuit. To maintain high detection efficiency and jamming resistance, the device calculates 200 indicators, reference signal matrix and reference code register are used. Decision on detection of effective trespasser or group is made according to the maximum product of input signal indication vector to reference matrix, and jamming resistance is achieved due to definition of reference code, at which the said maximum product was obtained, and sending prohibiting or allowing signal to 'AND' circuit.
EFFECT: high efficiency of human detection, enhanced jamming resistance of device.
9 dwg
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