METHOD TO CONTROL AUTHENTICITY AND MOVEMENT OF AGRO-INDUSTRIAL PRODUCTS AND SYSTEM FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC G06K5/02 

FIELD: information technology.

SUBSTANCE: invention relates to means of information support in networks of remote access and aimed at identification of agro-industrial products. System implementing the disclosed method comprises a reader, a radio-frequency mark and receiving equipment of the manufacturer. Reader comprises master oscillator 1, duplexer 2, transceiving antenna 3, high frequency amplifier 4, phase detector 5, data base 6 of identification codes, code comparison unit 7, switch 8, delay line 9, pseudorandom sequence generator 10, adder 11, multiplier 12, narrow-band filter 13, phase manipulator 14 and power amplifier 15. Radio-frequency mark comprises piezocrystal 16, microstrip antenna 17, electrodes 18, buses 19 and 20, set 21 of reflectors. Receiving equipment of the manufacturer comprises receiving equipment 22, high-frequency amplifier 23, heterodyne 24, mixer 25, low-pass filter 26, manufacturer data base 27, PLL system 28, multiplier 29, narrow-band filter 30 and phase detector 31.

EFFECT: high noise-immunity and sensitivity of receiving complex signals with phase manipulation by suppressing false signals (interference) received through additional channels used to identify the product.

2 cl, 4 dwg