Abstract
We propose, from experimental data, to identify the ocean acoustic multipaths, between acoustic sources and receivers separated about 100 km. After the description of experiment, we show that the active beamforming, using the knowledge of emitted signal, leads to satisfying spatial identification when the multipaths are temporarily separed, in spite of an antenna with only two phase centers. A fast spatio-temporal localization algorithm is used and useful results for acoustic tomography are obtained
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