METHOD FOR NOISE-PROOF RECEPTION OF BINARY SIGNALS, WHICH ARE MANIPULATED IN PHASE, BY MEANS OF THEIR PHASE SPLITTING AT RECEIVING DEVICE INTO TWO PHASE-SEPARATED SINGLE-FREQUENCY CHANNELS USING TWO-CHANNEL PHASE DEMODULATOR WITH TWO PHASE DETECTORS USING INVERSE DETECTED VOLTAGE LEVELS OF SIGNALS ACCOMPANIED BY SUBTRACTION OF SAID VOLTAGE LEVELS IN SUBTRACTING DEVICE

摘要

FIELD: radio communications. SUBSTANCE: method involves noise-proof reception of binary signals, which are manipulated in phase, by means of their phase splitting at receiving device into two phase-separated single-frequency channels using two-channel phase demodulator with two phase detectors using inverse, detected voltage levels of signals. Said voltage levels along with noise are subtracted by subtracting device which is located at output of two-channel. Noise is compensated and a lot of developed errors are detected. Method may be used for noise-proof reception of binary signals, which are manipulated in phase by turn around, for both radio communications and wire communication lines that operate using phase manipulation of carrier frequency oscillations. Receiving device splits received phase-manipulated signals using corresponding phasing of reference and received oscillations. Split signals are sent into two parallel phase-spaced channels, which operate at same carrier frequency. Each channel has its own phase detector, so that preliminary-detected voltage levels (video pulses) have opposite polarity when each binary information unit is received, while total output voltage of said two- channel demodulator is resulted by means of their relative subtraction together with noise, because a lot of noise (in particular, amplitude additive noise) provides single polarity noise voltage at output of phase detectors. In contrast, information signal generates inverse voltage levels. By this reason, subtraction unit at output of device results in increased signal-to-noise ratio. Invention claim declares method for noise-proof reception of binary signals, which are manipulated in phase by turn around, involving splitting of received signals in phase, sending them along two parallel phase- spaced channels, using two-channel phase demodulator having two phase detectors (one detector for each channel) and subtraction unit at output of demodulator; providing that two parallel phase-spaced channels output detected signals having opposite polarity, in other words, signals are inverse, while total output voltage of said two- channel demodulator is generated by means of their relative subtraction together with noise, this results in increased signal level, suppression and compensation of noise and detection of a lot of possible errors with possibility of test of communication channel quality. EFFECT: increased stability to noise. 1 dwg