SYSTEM FOR IDENTIFICATION OF OBJECTS Russian patent published in 2006 - IPC G01S13/75 

FIELD: engineering of systems for identifying remote objects.

SUBSTANCE: result is achieved due to separation of pulse series of in-pulse signal modulation of varying frequencies: filtration and demodulation of oscillations with frequency 40 kHz while suppressing oscillations at frequency 20 kHz and oscillations at frequency 20 kHz while suppressing oscillations at frequency 40 kHz. Demodulated signals joined at different polarity are sent to receiver of complex signal. System contains requester and answerer. Answerer has positional memorizing device 1, modulator 2, transmitting-receiving antenna 3. Requester includes mixers 4,8, directional branching device 5, radio signal source 6, phase shifter 7, circulator 9, receiving-transmitting antenna 10, band filters 11,15, linear amplifiers 12,16, adders 14,18,21,24,39,43,44, delay lines 12,17,23, selectors of negative pulses 19,41,46, selectors of positive pulses 22,40,47, inverters 20,42,48, integrating filter 34, shift register 35, threshold device 36, threshold voltage generator 37, OR element 38, and also complex signal receiver. Complex signal receiver includes band filter 25, frequency phase automatic-adjustment block 26, counter 27, elements AND 28,33, multiplier 29, integrating filter 30, threshold device 31, Different-trigger 32.

EFFECT: increased reliability of identification of objects.

2 cl, 4 dwg