Title :
Demonstration of a high-frequency acoustic barrier with a time-reversal mirror
Author :
Song, H. ; Kuperman, W.A. ; Hodgkiss, W.S. ; Akal, T. ; Guerrini, P.
Author_Institution :
Marine Phys. Lab., Scripps Instn. of Oceanogr., La Jolla, CA, USA
fDate :
4/1/2003 12:00:00 AM
Abstract :
An acoustic barrier has been demonstrated using a time-reversal mirror. The experiments, at 3500 Hz, utilized a source-receiver array, a probe source collocated with a receive array, and an echo repeater to emulate a disturbance. The successful demonstration is based on the idea that a disturbance such as an object between a time-reversal mirror and its focus will significantly disturb the focal region and, in particular, the quiescent region.
Keywords :
acoustic signal processing; echo; underwater sound; 110 m; 5 km; Elba Island; Italy; acoustic blast; acoustic disturbance; echo repeater; focal region disturbance; high-frequency acoustic barrier; ocean acoustics; probe source; quiescent region; source-receiver array; time-reversal mirror; Acoustic beams; Acoustic scattering; Acoustic signal detection; Acoustic testing; Mirrors; Oceans; Probes; Repeaters; Robustness; Transmission line measurements;
Journal_Title :
Oceanic Engineering, IEEE Journal of
DOI :
10.1109/JOE.2003.811900
