EVALUATION METHOD OF FREQUENCY OF CARRYING OSCILLATION OF SIGNAL CONVERSION DEVICE Russian patent published in 2011 - IPC G06F17/14 

FIELD: radio engineering.

SUBSTANCE: method involves synchronous accumulation, spectrum analysis and decision taking procedure. Range of divergence of radio frequencies is separated in several sub-ranges. Number of sub-ranges is chosen on the basis of the required evaluation accuracy. Synchronous signal accumulation at the inlet of signal conversion device (SCD) is performed parallel for medium frequencies of each sub-range. After accumulation there are coefficients of direct orthogonal conversion for each sub-range. Ratio of maximum coefficient of this sub-range to maximum coefficient of decomposition in spectrum of carrying oscillation of SCD is defined for each sub-range. The decision on the sub-range in which the carrying frequency of SCD oscillation is present is taken as per maximum value of obtained ratios for all sub-ranges.

EFFECT: improving evaluation accuracy of carrying oscillation of SCD.