FIELD: radio engineering; communication systems using broadband signals. SUBSTANCE: device has series-connected high-level noise suppression unit, signal rejection unit, noise rejection unit, and subtracter whose other input is connected to high-level noise suppression unit; the latter is multichannel unit that also functions to detect filtered-off input mixture and to compare allocated envelope with low threshold. Device provides for rejecting high-level narrow-band noise and for compensating low-level noise, threshold used in detecting high-level noise being K times higher than that used for detecting low-level noise, where K is factor depending on degree of narrow-band noise suppression due to compensation of this noise. EFFECT: enhanced noise immunity. 6 dwg
