FIELD: protection against explosive devices.
SUBSTANCE: invention relates to means of controlling mines and other explosive objects having radio fuses and is intended for protection against radio-controlled explosive devices. Device comprises a generator of periodic nonlinearly varying voltage, a voltage-controlled generator, an inverter, a comparator, a pulse counter, a control device and a switch, a band-pass filter for the whole range of protected frequencies from the lower frequency fl to the upper frequency fu, a power amplifier and a transmitting antenna. Signals from the generator output and from the inverter output are supplied to inputs of the switch, which successively outputs to the band-pass filter fragments of signals from the generator output and from the inverter output. Band-pass filter of the protected frequency range from the lower frequency fl to the upper frequency fu filters out high-order harmonics arising when the switch is switched. Output signal from the band-pass filter is transmitted to the power amplifier where it is amplified and transmitted to the transmitting antenna.
EFFECT: higher probability of guaranteed radio suppression at the same energy density of the interference signal in the protected range.
1 cl, 1 dwg
