| 摘要 |
FIELD: physics. ^ SUBSTANCE: known matrix receiver has its first stage channel additionally comprising, except for first one, video signal switch and delay line connected in series, intermediate frequency signal switch and intermediate frequency delay line connected in series. Video signal first input is connected to relevant output of first-stage detector. Video signal switch second output is connected to video signal delay line output and to appropriate output of proposed device. Intermediate frequency signal switch first input is connected to output of appropriate mixer. Second output of intermediate frequency signal switch is connected to output of intermediate frequency delay line and to first-stage output. Second inputs of video signal switches and intermediate frequency signal switches in each channel are combined and connected to output of appropriate RS - trigger, S - inputs of each RS - trigger are connected to output of relevant AND-circuit. One input of said circuit is connected to output of detector in appropriate channel. Second input, for all channels of first stage except for first and second are connected to output of relevant channel of OR-circuit/ inputs of said circuit are connected to outputs of detectors in channels with previous numbers. Note here that second input of AND-circuit in second channel is connected to output of first channel detector, outputs of RS - triggers are connected to inputs of first OR-circuit. Output of said circuit is connected to S - input of counter, R - input of said counter is connected to second output of second OR-circuit. Inputs of said circuit are connected to outputs of AND-circuit and decoder output/ said decoder is connected also to R-inputs of RS - triggers, decoder input is connected to counter output with its counting input connected to clock pulse generator. ^ EFFECT: higher probability of unambiguous frequency detection, elimination of false frequency registration in reception of two signals in different frequencies. ^ 1 dwg |
