Suppression devices narrow-band interference in satellite navigation receivers

摘要

FIELD: radio engineering, communication.;SUBSTANCE: invention relates to radioelectronics and can be used as a cheap means of suppressing narrow-band interference at the input of a navigation receiver of signals from GLONASS, GPS, Galileo and Compass satellites. The interference suppressing device includes a spectrum analyser, having a first discrete Fourier transform (DFT) unit, a unit for selecting narrow-band interference, a unit for rejecting narrow-band interference having a second DFT unit, the output of which is connected to an inverse DFT unit, and an adder; a memory unit is connected between the input of the analyser and the non-inverting input of the adder, and the output of the rejection unit is connected to the inverting input of the adder.;EFFECT: designing a cheap means of suppressing narrow-band interference in conditions where there is a large amount of unstable narrow-band interference, using few hardware resources and computational costs without peak loads, as well as high reliability of timely determination of narrow-band interference owing to constant signal scanning for presence of said interference.;4 cl, 4 dwg