Measuring the Characteristics of Sound Reflection and Scattering Using Elastic Cylindrical Shells in Hydroacoustic Basin Conditions

A method and an experimental setup intended for measuring the amplitude and phase of the acoustic
field in the near zone of a scatterer are described. The results from measuring the scattering
characteristics of low-frequency sound signals emitted by elastic cylindrical shells are analyzed.
The following two problems regard the amplitude phase characteristics of the scattered sound field in
the near zone of a scatterer made in the form of an elastic finite cylindrical shell. Both problems are
solved on the basis of experimental data [1,10]:
1) The determination of the nature of sound scattering by the shell at low-sounding frequencies;
2) The calculation of the angular scattering of sound in the Fraunhofer zone from the
measurement of both the amplitude and phase of the scattered field in the Fresnel zone.