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Determination of the hydrophone phase-frequency response by its amplitude-frequency response
https://doi.org/10.32446/0368-1025it.2021-7-48-53
Abstract
One of the tasks of the COOMET 786/RU/19 pilot comparisons is to check the correctness of the hydrophone model proposed in VNIIFTRI, consisting of an advance line and a minimum-phase part, including the effect of sound diffraction and resonance properties of the active element. This model makes it possible to use the Hilbert transform to obtain the phase-frequency response from the amplitude-frequency response as well as for inverse operation. The results of measuring experiments performed using facilities of the State Primary Standard GET 55-2017 are presented. For many practical tasks, it is not necessary to obtain the phase-frequency response for an acoustic center of the receiver. It is enough to determine the shape of the phase-frequency response using much less laborious methods. The question of which of the characteristics is expedient to determine during calibration - for an acoustic center, or for a point on the surface of an active element, deserves a discussion among specialists performing acoustic measurements.
About the Authors
A. E. Isaev
Russian Metrological Institute of Technical Physics and Radio Engineering (VNIIFTRI)
Russian Federation
Russian Federation
Alexander E. Isaev
Mendeleevo, Moscow Region
B. I. Khatamtaev
Russian Metrological Institute of Technical Physics and Radio Engineering (VNIIFTRI)
Russian Federation
Russian Federation
Bulat I. Khatamtaev
Mendeleevo, Moscow Region
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Review
For citations:
Isaev A.E., Khatamtaev B.I. Determination of the hydrophone phase-frequency response by its amplitude-frequency response. Izmeritel`naya Tekhnika. 2021;(7):48-53. (In Russ.) https://doi.org/10.32446/0368-1025it.2021-7-48-53
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