METHOD OF FREQUENCY MEASUREMENT Russian patent published in 2014 - IPC G01R23/00 

FIELD: measuring instrumentation.

SUBSTANCE: method of frequency measurement involves count of reference frequency periods per measured frequency period and calculation of respective codes saved in the order of evolvement, thus obtaining a source code sequence which is analysed by determining continued fraction factors for reference to measured frequency periods ratio starting from zero factor; after calculation of next codes of continued fraction a_i factor and continued fraction denominator p_i, continued fraction denominator code q_i, matching continued fraction for reference frequency period to measured frequency period under number i and relative maximum error of measurement reference to measured frequency period ratio are calculated.

EFFECT: reduced maximum relative error of method for frequency measurement.

1 dwg