Acoustic pulse propagation in a range-dependent turbulent ocean

Jenn-Hawn Tarng*, W. R. Chang

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

When an acoustic pulse propagates in a turbulent ocean with a deterministic sound-speed profile, it is distorted since every frequency component experiences different extents of turbulent scattering and echo numbers. Here, the split-step method is used to simulate an acoustic pulse with a 3kHz carrier propagating through a turbulent ocean with range-independent / - dependent sound-speed profiles. It is found that (1) The ocean is a frequency-selective fading channel; (2) The received pulse profile is dependent on the received depth, sound speed distribution, fluctuation strength and scale length of turbulence in oceans; (3) The rms pulsewidth is broadened by several times of its initial value; (4) The increase in fluctuation strength or decrease in the scale length increases the rms pulsewidth; and (5) The statistical properties are similar for both the range-independent and -dependent cases in the mean square sense.

Original languageEnglish
Article number526900
Pages (from-to)615-619
Number of pages5
JournalOceans Conference Record (IEEE)
Volume2
DOIs
StatePublished - 9 Oct 1995
EventProceedings of the 1995 MTS/IEEE Oceans Conference. Part 1 (of 3) - San Diego, CA, USA
Duration: 9 Oct 199512 Oct 1995

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