Variability of SCUBA diver's acoustic emission

Dimitri M. Donskoy, Nikolay A. Sedunov, Alexander N. Sedunov, Michael A. Tsionskiy

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

23 Scopus citations

Abstract

Knowledge of the variability of the acoustic emission characteristics from SCUBA divers is critically important for designing and operating a passive acoustic SCUBA characterization system. Using modeling and experimental measurements in a controlled environment, we identified key source factors influencing the variability of the acoustic emission parameters including Source Band Level (SBL), Spectral Power Density (SPD), and breathing periodicity or emission modulation frequency. The key factors are: equipment, specifically, the design of the first stage (high pressure) regulator and its service life; diver's experience and training; and, finally, operating conditions of the equipment and diver, i.e. tank air pressure and the diver's motion activity. We found, for example, that the SBL could vary as much as 16 dB depending on the equipment used and up to 15 dB depending on the diver's intensity of motion.

Original languageEnglish
Title of host publicationOptics and Photonics in Global Homeland Security IV
DOIs
StatePublished - 2008
EventOptics and Photonics in Global Homeland Security IV - Orlando, FL, United States
Duration: 17 Mar 200820 Mar 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6945
ISSN (Print)0277-786X

Conference

ConferenceOptics and Photonics in Global Homeland Security IV
Country/TerritoryUnited States
CityOrlando, FL
Period17/03/0820/03/08

Keywords

  • Acoustic emission
  • Breathing periodicity
  • Divers
  • SCUBA
  • Source level
  • Variability

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