MEASURING transfer function of individual modes of ionospheric propagation and frequency response of multipath SW RADIO

摘要

method u0438u0437u043cu0435u0440u0435u043du0438u00a0 transfer functions of hrm u0440u0430u0441u043fu0440u043eu0441u0442u0440u0430u043du0435u043du0438u00a0 signal and amplitude frequency characteristics of the uv u043cu043du043eu0433u043eu043bu0443u0447u0435u0432u043eu0439 radio links for u043au043bu044eu0447u0430u044eu0449u0438u0439u0441u00a0 in radiation transmitter continuous linear frequency modulated signal with the amplitude aO of t, the speed of u0438u0437u043cu0435u043du0435u043du0438u00a0 frequency and u043eu0431u0440u0430u0431 u043eu0442u043au0438 his country u0441u0436u0430u0442u0438u00a0 method in frequency area, u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 orderat the reception of each i is taken by long yu fashion u0432u044bu0434u0435u043bu00a0u044eu0442 filter, agreed with the central frequency oi signal this fashion with com u043fu043bu0435u043au0441u043du044bu0439 coefficient of transfer;and u0438u0437u043cu0435u0440u00a0u044eu0442 the amplitude and phase of the output signal of the filter at any time, u0437u043du0430u0447u0435u043du0438u00a0 which are equal u0437u043du0430u0447u0435u043du0438u00a0u043c amplitude and phase of the transfer function of the channel and u0440u0430u0441u043fu0440u043eu0441u0442u0440u0430u043du0435u043du0438u00a0 appropriate fashion on the frequency of the signals from the outputs of u0441u0443u043cu043cu0438u0440u0443u044eu0442 filters and u0438u0437u043cu0435u0440u00a0u044eu0442 total signal amplitude at each moment of time.u0437u043du0430u0447u0435u043du0438u00a0 which are equal u0437u043du0430u0447u0435u043du0438u00a0u043c amplitude frequency characteristics of the uv u043cu043du043eu0433u043eu043bu0443u0447u0435u0432u043eu0439 radio links at the same frequency.