Synthetic aperture time-reversal communications in shallow water: Experimental demonstration at sea.

Autor: Higley, W. J., Roux, Philippe, Kuperman, W. A., Hodgkiss, W. S., Song, H. C., Akal, T., Stevenson, Mark
Předmět:
Zdroj: Journal of the Acoustical Society of America; Oct2005, Vol. 118 Issue 4, p2365-2372, 8p, 2 Charts, 12 Graphs
Abstrakt: Time reversal has been shown as an effective way to focus in both time and space. The temporal focusing properties have been used extensively in underwater acoustics communications. Typical time-reversal communication experiments use vertical transducer arrays both to increase the signal-to-noise ratio and decrease the temporal sidelobes created in the time reversal process. Comparable temporal focusing is achieved using a horizontal array. In this paper, synthetic aperture time-reversal communications are accomplished, requiring only two transducers (one transmitter and one receiver). Deriving results from an at-sea experiment, this work confirms the viability of synthetic aperture time-reversal communications. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index