METHOD OF DETECTING SIGNALS WITHOUT CARRIERS Russian patent published in 2014 - IPC H04K1/00 

FIELD: radio engineering, communication.

SUBSTANCE: method of detecting signals without a carrier involves dividing a digitised analogue signal into fragments which correspond to the number of elements of a predetermined digital sequence vector (DSV), inverting fragment readings, the number of which is determined based on a predetermined DSV consisting of N zero and unit values, wherein DSV values equal to zero correspond to fragments, the values of readings of which when inverted fully match values of readings of fragments corresponding to DSV values equal to one, after which a resultant sample is formed by arranging first readings of all fragments first, then second values and the last values at the end; the noise level threshold value selected is a value equal to double the mean-square deviation of readings of the resultant sample for positive and negative values of readings. Signal parameters are evaluated by comparing the sample with the noise level threshold value, wherein the signal parameters are maximum negative and positive values of the resultant sample, and a signal is detected if at least one of the parameters exceeds the threshold noise level on magnitude.

EFFECT: high reliability of detection.

2 cl, 6 dwg