The Application of Equations and Methods for Sound Diffraction in the Synthesis of Hydroacoustic Antennas

Antennas used in hydroacoustics have a variety of directional patterns, depending on their purpose. In
particular, they can be directed to one plane rather than another in order to have a narrow main lobe,
to keep the width of the main maximum in a wide frequency range, and so on. Requirements for
antenna directivity characteristics play an initial data-related role when solving antenna synthesis
problems. This is calculated using the amplitude-phase distribution of the pressure of vibrational
velocity on its surface, provided there is a given directional characteristic. The synthesis of an antenna
will be considered. Our example is a solid (continuous) cloistered form system with a curved
spheroidal surface (the revolving body). The choice of surface form is not accidental because, with the
help of coordinate systems, prolate and oblate spheroids can be described (approximately or strictly)
due to their large number of surfaces for revolution.