FIELD: radio engineering.
SUBSTANCE: broadband noise signal is shaped in frequency band (F0, F1) of transmission channel and modulated according to modulation mechanism; signal obtained in the process is passed through propagation medium and received together with superimposed narrow-band noise, filtered off in frequency band (F0, F1), and two signals are shaped of which one is generated as result of amplification of filtered-off signal and amplitude limiting, second signal being mentioned filtered-off one or linearly amplified filtered-off signal without changing its waveform; two signals obtained are multiplied, and resultant signal is filtered in frequency band [Fnrw, (F1-F0)]; envelope of signal obtained is separated and demodulated to produce information signal, where Fnrw is frequency band of noise-voltage amplitude square spectrum variation.
EFFECT: enhanced suppression ratio of narrow-band noise.
1 cl, 6 dwg
