Effects of internal waves on acoustic coherent communications during SW06

A. Song, M. Badiey, A. Newhall, J. F. Lynch, H. Deferrari

Research output: Contribution to journalConference articlepeer-review


During a 12 h period in the Shallow Water 2006 experiment, concurrent environmental observations and acoustic measurements were made to study internal wave effects on coherent underwater acoustic communications. Binary phase shift keying signals at carrier frequencies 813 Hz and 1627 Hz which propagated over a 19.8 km source-receiver range during the 12 h period are processed. This is done using time reversal multi-channel combining followed by a decision feedback equalizer with continuous channel updates prior to time reversal combining. The communications performance in terms of output signal-to-noise ratio exhibits significant change (more than 5 dB) due to the passage of internal waves through the acoustic track. The effects of the internal waves also show a frequency dependency.

Original languageEnglish (US)
Pages (from-to)2845-2850
Number of pages6
JournalProceedings - European Conference on Noise Control
StatePublished - Dec 1 2008
Event7th European Conference on Noise Control 2008, EURONOISE 2008 - Paris, France
Duration: Jun 29 2008Jul 4 2008

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Public Health, Environmental and Occupational Health
  • Building and Construction
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Automotive Engineering
  • Aerospace Engineering


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