Abstract
A deep-water experiment was performed off the west coast of the United States with a short vertical array cut for 7.5 Hz and a source transmitting tonals as well as chirps. The data were processed to identify eigenray arrivals out to a convergence zone for the ultimate purpose of revisiting mid frequency, deep water volume attenuation in the Pacific Ocean and comparing it to decades old measurements and models. Further, aside from the beamforming done at the receiver array, attempts were made to construct a synthetic aperture source array in order to perform “double beamforming” and thereby enhance the signal to noise ratio. We present our initial results of this experiment.
Published Version
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