METHOD FOR DETERMINING FREQUENCY, TYPE OF MODULATION AND MANIPULATION OF RECEIVED SIGNALS Russian patent published in 2007 - IPC G01R23/00 

FIELD: radio-electronics, possible use for determining carrier frequency, type of modulation and manipulation of signals received in given range of frequencies.

SUBSTANCE: the known method for determining frequency, type of modulation and manipulation of received signals is complemented with, in case of phase manipulation of received signal, multiplication of signal phase by two, four and eight in three processing channels respectively, width of spectrum of second, fourth, and eights harmonics of frequency of received signal are determined, ratio of width of spectrum of received signal to width of spectrum of its harmonics is determined in each processing channel, resulting ratios are compared to one, and if these ratios are substantially more than one, logical unit are formed, outputs of all three channels are connected to first inputs of coincidence elements "AND" respectively, second input of first coincidence element "AND" is connected directly to output of second processing channel, second input of second coincidence element "AND" is connected through inverter to output of first processing channel, second input of third coincidence element "AND" is connected through inverter to output of second processing channel, if logical unit appears at output of first coincidence element "AND", conclusion is drawn about double phase manipulation of received signal, if logical unit appears at output of second coincidence element "AND", conclusion of quadruple phase manipulation of received signal is drawn, if logical unit appears at output of third coincidence element "AND", conclusion is drawn about octuple phase manipulation of received signal.

EFFECT: expanded functional capabilities of the method due to determining of multiplicity of phase manipulation of received signal.

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