Spatial correlation of explosion-generated signals received by longitudinally separated hydrophones in the Mediterranean Sea
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Results of an experiment carried out in the Mediterranean Sea on a propagation track ∼400 km in length are presented. The sources of sound were 2.5-kg trinitrotoluene charges. The signals were received by three hydrophones spatially separated along the track by distances of 100 and 300 m. The hydrophones were carried by radio buoys, which were connected with each other and with the receiving vessel. The frequency band under study was 240–340 Hz. Under the conditions of the experiment, the spatial correlation interval obtained with averaging over the spreading time of multipath signals proved to be smaller than 100 m. It was shown that the resolution of signals arriving over individual ray paths or in narrow ray bundles considerably increased this interval. In this case, its experimental value was found to exceed 300 m.
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