By I. B. Abbasov
The merely ebook that gives a entire and completely up to date assurance of hydroacoustic ocean exploration, this paintings bargains with the diagnostics of non-uniformities in a water medium utilizing the hydroacoustic parametric antenna. The non-uniformities of the water medium within the learn are of geometrically ordinary form, i.e., the form of a sphere, a cylinder, and a spheroid. An account is given of theoretical and experimental reviews of wave procedures that ensue within the occasion of the scattering of non-linearly interacting acoustic waves at a sphere, a cylinder, and a spheroid. Scattering difficulties are formulated; recommendations to the inhomogeneous wave equation are present in the 1st and moment approximations utilizing the successive approximations method.
For the 1st time, high-frequency asymptotic expressions of acoustic strain for all spectral parts of the secondary box are acquired for the nonlinear scattering challenge. The scattering diagrams are calculated and plotted, after which analyzed and in comparison. result of experimental experiences of the parametric acoustic antenna box scattering at solid
steel spheres are provided. Experimental scattering diagrams either for the parametric antenna pump waves and for the secondary box waves together with the adaptation frequency wave, the sum frequency wave, and the second one harmonic wave are offered. 3D modeling of wave strategies is additionally considered.
essential for researchers and experts in nonlinear hydroacoustics and ocean acoustics; it additionally could be of use for postgraduates and scholars focusing on hydroacoustics and ocean exploration.
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