NONLINEAR RADAR FOR EAVESDROPPING DEVICES Russian patent published in 2008 - IPC G01S13/02 

FIELD: electricity.

SUBSTANCE: nonlinear radar contains a reference amplifier, a frequency divider, a linear FM generator, five band-pass filters, two units of the FM linear probing signal generation, two power amplifiers, a lower frequency filter, receiving and transmitting antennas, two mixers, a receiver, an indicator, two gates, two directional couplers, a power adder and HF amplifier interconnected so that, apart from reducing the probing signal harmonics coming into the receiver from both the transmitting antenna and those reflected by the underlying surface, it ensures a frequency isolation of a useful signal from the noise, given there are no time differences between them, thus allowing the detection of radio electronic devices in the search near zone.

EFFECT: wider zone of nonlinear objects detection.

6 dwg