FIELD: measurement technology. SUBSTANCE: method involves selecting Δ value describing auxiliary phase modulation amplitude as 
radians, where N, n, M are the positive integers and M≥2, N>n. M is equal to 1, 
radians and n≠N. When M≥2, angular rotation information on gyroscope is to be taken at frequency 
where K is the positive integer. If M=1, the frequency is 
where N, n, M and K are stepwise saw-shaped voltage impulse parameters supplied to broad-band phase modulator. EFFECT: high accuracy and reliability of measurements. 10 dwg, 2 tbl
