RECEIVING RADIO-CENTER (VARIANTS)

FIELD: radio engineering, possible use in receiving radio-centers of decametric wave range. ^ SUBSTANCE: receiving radio-center contains serially connected antenna-feeder device, multi-channel radio-receiving device, device for demodulation and decoding of signals, high frequency routes, inputs of which are connected to outputs of matching device, and also analog-digital converters. Outputs of analog-digital converters are connected to inputs of digital computing device in the form of matrix commutator and a set of digital radio-receiving devices, output of each digital radio-receiving device is connected to input of device for demodulation and decoding of signals. Connected to output of each high frequency route are serially coupled controllable attenuator, first frequency transformer, first intermediate frequency filter, second frequency transformer, frequency discrimination circuit which contains a set of second intermediate frequency filters, connected in parallel by input. Outputs of second intermediate frequency filters are connected to inputs of circular commutator, output of which is connected to input of analog-digital converter. Control input of circular commutator is connected to first control output of analog-digital converter, while second input of first frequency transformer is connected to block for forming signal of first heterodyne, second input of second frequency transformer is connected to block for forming signal of second heterodyne, and attenuator control input is connected to second control output of analog-digital converter. A schematic model of receiving radio-center variant is provided. ^ EFFECT: increased interference resistance of receiving radio-center due to improved frequency discrimination of multi-channel radio-receiving device. ^ 2 cl, 2 dwg