METHOD OF THE LOW-VISIBLE RADAR STATIONS PROBING RADIO SIGNALS RECOGNITION Russian patent published in 2018 - IPC G01S13/52 

FIELD: radio engineering and communications.

SUBSTANCE: invention relates to radio engineering, namely to methods of the low-visible radar stations probing radio signals type and modulation parameters recognition. It can be used for recognition of the low-visible radar stations radio signals with a complex time-frequency structure. Said result is achieved due to: setting the reference radio signals, forming the reference radio signals time-frequency portrait by performing of the Choi-Williams frequency-time conversion operation over a plurality of the reference radio signals digital samples, forming the received radio signal to be recognized time-frequency portrait by performing a Choy-Williams frequency-time conversion operation over the plurality of the received radio signal digital samples; with the received to be recognized radio signal time-frequency portrait, performing an additional noise suppression operation using a discrete S-conversion (Stockwell conversion), comparing the to be recognized radio signal time-frequency portrait with the reference radio signals time-frequency portrait; deciding whether the to be recognized radio signal belongs to one of the reference radio signals.

EFFECT: increase in the radio signals recognition probability.

1 cl, 5 dwg