A.E. Isaev, A.N. Matveev, G.S. Nekrich

FSUE “VNIIFTRI”, Mendeleevo, Moscow region
isaev@vniiftri.ru,
matveev@vniiftri.ru

Al’manac of Modern Metrology № 3 (19) 2019, pages 112–140

The article talks about the development of a method for calibrating receivers of vector quantities of a hydro-acoustic field in a reflective water tank at VNIIFTRI.
The results of comparison of the calibration results of oscillation velocity receivers of particles in the aquatic environment in the frequency range from 5 Hz to 10 kHz are presented. The Research Institute of Applied Acoustics in Hangzhou — pilot laboratory, and Russian Metrological Institute of Technical Physics and Radio Engineering participated in comparison. To evaluate measuring and calibration capabilities in the field of measuring the hydro-acoustic field vector quantities except for installations implementing calibration in the standing sound wave field of the acoustic chamber, the participants of comparisons for the first time have used installations for absolute calibration of vector receivers across the field in the reverberation sound field of the water tank. The consistency of the calibration results for the three reference receivers was confirmed; no significant discrepancies were found for any of the 34 one-third octave frequencies at which the comparisons have been performed.

Key words: metrology, underwater acoustics, pilot comparisons, oscillation velocity of particles in the aquatic environment, field calibration, pressure calibration.

Full texts of articles are available only in Russian in printed issues of the magazine.