METHOD OF MEASURING DISTRIBUTION OF SOUND SPEED IN LIQUID MEDIUM Russian patent published in 2012 - IPC G01H5/00 

FIELD: physics.

SUBSTANCE: acoustic diffuser lying in a liquid at a fixed horizon is exposed to sound vibrations; the acoustic signal scattered from said acoustic diffuser is received; sound speed on the horizon of the sound vibration source and receiver is measured, as well as the slope angle values of the beam pattern of the acoustic receiver, their corresponding time for propagation of the acoustic signal from the sound vibration source to the diffuser and back to the acoustic receiver. A strong single acoustic diffuser is exposed to sound vibrations successively on n+1 slope angles of one beam pattern of the sound vibration source, lying on a fixed horizon, which is superimposed with the acoustic receiver. From the measured values of sound speed on the horizon of the source and receiver, slope angles of one beam pattern of the sound vibration source and receiver, their corresponding time for propagation of the acoustic signal from the source to the diffuser and back, the value of the horizon of the diffuser, values of horizons of n lower bounds of n layers of the liquid medium and n values of sound speed thereon are found by solving a system of n+1 equations.

EFFECT: simple measurement.

2 cl, 2 dwg, 3 tbl