DEVICE FOR DETECTING INITIAL PHASE MODULATION OF PERIODIC SEQUENCE PULSES

摘要

FIELD: radio engineering, communication.;SUBSTANCE: device for detecting initial phase modulation of pulses comprises two processing channels, each having series-connected multiplier, the first input of which is the input of the device, and an integrator, as well as a comparator connected to outputs of integrators of each channel, the device being characterised by that it includes a delay line which is connected between the input of the device and the second input of the multiplier of the first channel; the delay time in the delay line is equal to the pulse repetition period of the input sequence, wherein a cross-correlation function of input sequence pulses is formed in the first channel and an autocorrelation function of input sequence pulses is formed in the second channel, and there is initial phase modulation of the input sequence pulses if the inequality U_out.1U _out.2 holds for any two pulses of the sequence, where U_out.1 and U _out.2 are output signals of integrators of the first and second channels, respectively.;EFFECT: enabling detection of initial phase modulation of a pulse sequence by determining phases of cross-correlation and autocorrelation functions of pulses of said sequence.;1 dwg