FIELD: radio engineering, communication.
SUBSTANCE: method of anti-collision radiofrequency identification of labels on passive acoustic waves (PAW labels), consisting in simultaneous irradiating of at least two PAW labels with a frequently manipulated signal; obtaining a time-frequency matrix where the column numbers correspond to the pulse frequencies of the response signal from the labels, and rows - to time delays between them; filling the time-frequency matrix with diagonals; sequential shifting of columns; and obtaining labels identification codes. The system for carrying out the method additionally comprises a signal detecting unit, a pulse distance meter, a time comparison unit, an on-board unit, K-band filters, K-units of signal comparison.
EFFECT: separation of signals from several labels in time and frequency domain and increase in reliability of identification code of each label in conditions of high collision probability.
3 cl, 1 dwg
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