Titlebook: Acoustical Imaging; Piero Tortoli,Leonardo Masotti Book 1996 Springer Science+Business Media New York 1996 Speckle.Transducer.filter.imagi

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https://doi.org/10.1007/978-3-658-06721-2inear technique aimed at processing the signals sampled by an array of sensors.. The goal of beamforming is to enhance the signals incoming from a selected steering direction and to attenuate signals incoming from any other direction. In active sonar systems, a scene is insonified first by an adequa

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,Arbeit außerhalb der Landwirtschaft, the receivers disposed at different positions is offered. The possibility to obtain the tomographic type information by this principle was experimentally shown. *) It should note, that the mentioned procedure allows generalization on cases of partial coherence of radiation, when integral “I” is not

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Ohne strategische Planung geht gar nichts!, plane acoustic wave. The basic assumptions are: 1) the measured (not necessarily far) field is available as concerns both phase and amplitude, on a part or on the totality of a surface completely enclosing the body, 2) the scattering surface is penetrable (transmission boundary conditions), 3) the

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https://doi.org/10.1007/978-3-658-06721-2We have presented a technique in the past [1–3] to calculate the acoustic potential and pressure from knowledge of the excitation spatial and temporal velocity function. In this paper we wish to present a comparison of a predicted field from using the technique with experimentally measured data.

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https://doi.org/10.1007/978-3-663-02323-4In general case classical tomographic scheme can be reduced to the solution of the parametric manifold of Fredholm integral equations of first kind