| 摘要 |
FIELD: physics, radio.SUBSTANCE: invention relates to detection of amplitude-modulated aircraft radio signals transmitted over the same frequency channel simultaneously. A method of detecting at least two amplitude-modulated transmitted signals contained in a received signal within the same frequency channel with respectively different frequency shift is characterised by that it includes determining a modified received signal through nonlinear signal processing of received signals; determining the spectrum of the modified received signal via Fourier transform; and detecting said signals if at least two first spectral lines each associated with carrier signals are distinguishable and identified within the determined spectrum.EFFECT: detecting at least two signals transmitted simultaneously over the same frequency channel and contained in a received signal with different frequency shift and different received amplitude.17 cl, 6 dwg |
