METHOD OF DETERMINATION OF SHIP'S SPEED OVER THE BOTTOM Russian patent published in 1995 - IPC

FIELD: measurement technology. SUBSTANCE: correlation time delay is measured; magnitude of this delay is equal to sum whose augend is equal to regulated time delay determined at equality of cross-correlation coefficient to autocorrelation coefficient measured at zero delay, addend is equal to additional delay whose magnitude is so selected that magnitude of cross-correlation coefficient should be within 0.3 to 0.7 of the maximum magnitude. EFFECT: high accuracy of measurement. 3 dwg