METHOD OF FIXING TIME SCALE Russian patent published in 1994 - IPC

FIELD: radioelectronics. SUBSTANCE: time scale is fixed to pulse radiosignal with known amplitude. Radiosignal is primary converted by means of changing in phase of signal of carrying frequency due to 180 deg jump at preset part of leading edge of radiopulse at preset period of carrier frequency signal. The first converted radiosignal is binary quantized and accumulated at time moments, which correspond quadrature to zeros of phase of carrier frequency signal, when they are available one relatively another in time interval, being equal to period of carrier frequency signal. Signs of accumulated binary-quantized signals are compared with specified signs of converted signal for specified period of carrier frequency signal. Simultaneously with the first conversion the second one is performed for radiosignal due to change in phase of carrier frequency signal for 180 deg jump at time moment, shifted for period of carrier frequency signal relatively the time moment, when phase of carrier signal frequency was changed by 180 deg jump of the first converted signal. Binary quantization is performed and any binary-quantized signal is stored at time moments, corresponding to quadrature to zeros of phase of carrier frequency signal, when time interval between the basic and additional quantizing pulses is equal to half period of carrier frequency signal. Basic quantizing pulses are shifted one relatively the other for time interval, being equal to period of carrier frequency signal. Additional quantizing pulses are located in the central point of time interval between the basic quantizing pulses. Signs of binary-quantized signals are compared at time moments, corresponding to basic quantizing pulses, with preset signs of corresponding converted signals at preset period of carrier frequency signal. Accumulated binary-quantized signals are summed at time moments, corresponding to additional quantizing pulses, when signs of accumulated signals correspond to preset signs at time moment, which correspond to basic quantized pulses. Absolute values of these signals are compared with absolute values of total signal. If level of total signal is lesser than any accumulated binary-quantized signals for basic quantizing pulses, the period of carrier frequency signal is assumed, which corresponds to moments of quantization, as the value be determined. Moment when carrier frequency signal goes over zero value at this period is assumed as moment of fixing of time scale to known pulse radiosignal. EFFECT: reduced time for fixing time scale at high level of interferences. 2 dwg