An initial demonstration of underwater acoustic communication using time reversal |
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Authors: | Edelmann GF Akal T Hodgkiss WS Seongil Kim Kuperman WA Hee Chun Song |
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Institution: | Marine Phys. Lab., California Univ., San Diego, La Jolla, CA; |
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Abstract: | In July 1999, an at-sea experiment to measure the focus of a 3.5-kHz centered time-reversal mirror (TRM) was conducted in three different environments: an absorptive bottom, a reflective bottom, and a sloping bottom. The experiment included a preliminary exploration of using a TRM to generate binary-phase shift keying communication sequences in each of these environments. Broadside communication transmissions were also made, and single-source communications were simulated using the measured-channel response. A comparison of the results is made and time reversal is shown to be an effective approach for mitigating inter-symbol interference caused by channel multipath. |
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