| 摘要 |
FIELD: radio technology. ^ SUBSTANCE: invention can be used for increasing resistance to interference in relation to non-stationary noises. The technical outcome of the invention is the increased level of suppressing the noise signal. The outcome is achieved by that in the method, the radar signals are detected at the same time as the main signal is processed. The method lies in matching filtering with amplification of the signal and filtration of its wave envelope, comparison of the filtered oscillations with a threshold, which is fixed depending on the level of noise in the time interval, which includes the interval of probable receiving of the signal. The received signal undergoes further filtering with elimination of the whole working signal by rejection. The proposed device for detecting radar impulses, which uses the method given above, consists of a matched filter, wave envelope detector, subtracting unit, threshold device, extra wave envelope detector and an elimination filter, all connected in a well defined way. ^ EFFECT: increased level suppression of noise signal spectral components of which coincide with the spectral components of the working signal and simplification of the schematics of the device. ^ 2 cl, 1 dwg |
