RADIO SIGNAL RECOGNITION METHOD Russian patent published in 2011 - IPC G06K9/00 

FIELD: information technology.

SUBSTANCE: radio signal recognition method involves giving standard radio signals first, discretisation, quantisation and frame wavelet transformation of the sequence of quantised readings of standard radio signals. A standard radio signal attribute vector is then generated from the wavelet coefficients of the standard radio signals, after which the recognised radio signal is received and its attribute vector is generated in the same way as that of standard radio signals. The received signal is then identified by comparing its attributes with attributes of standard radio signals, where for each time reading of the radio signal, the maximum wavelet coefficient is picked up from corresponding wavelet coefficients at filter outputs, onto which the rest of the wavelet coefficients corresponding to the given time reading of the radio signal are standardised, and average power values of the wavelet coefficients obtained at the output of each filter are chosen as attribute vectors. The received radio signal is identified through successive modulo subtraction of elements of its attribute vector from attribute vectors of each of the standard radio signals, and the recognised radio signal is the incident standard radio signal, the difference between attribute vectors of which is minimal.

EFFECT: high efficiency while maintaining the required probability of correct recognition.

12 dwg