Application of beam forming techniques to measurements of acoustic scattering from the ocean bottom |
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| Authors: | Berkson J Kloosterman H Akal T Berrou J |
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| Institution: | Saclant ASW Research Centre, La Spezia, Italy; |
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| Abstract: | Signals from an explosive source backscattered from the seafloor and received at long range by hydrophones of a towed array are processed to estimate the directional distribution of energy for a given time increment. As assembly of these data shows the time and amplitude of scattering features, and after conversion to distance, the geographic location of the return. A frequency-domain beam-forming procedure is used in which beam levels are averaged over a given band of a broad-band source. The processing is applied to experimental data obtained in the southern Tyrrhenian Sea. The major backscattering occurred at the Baconi Seamounts and the coastal margin of Sardinia. |
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