A Synthetic Bandwidth Measurement System for Acoustic Remote Sensing of Geoacoustic Properties of Bottom Sediments

Harry A. DeFerrari, Neil J. Williams, Hien B. Nguyen

Research output: Contribution to journalArticle

Abstract

A series of narrowband acoustic transmissions may be combined into an equivalent broadband signal—with a corresponding increase in resolution in the time domain. This procedure is called synthetic bandwidth processing. If ray methods are used in combination with inverse theory to determine the otacoustic properties of bottom sediments, the increased time resolution aids in the identification of arrivals which are closely spaced in time. This, in turn, permits improved estimates of the spatial distribution of properties and more accurate otacoustic models. Signal processing techniques and guidelines for synthesizing multioctave broadband pulse-like signals are presented here. Also described is the instrumentation used to implement the technique in real ocean environments.

Original languageEnglish (US)
Pages (from-to)416-421
Number of pages6
JournalIEEE Journal of Oceanic Engineering
Volume19
Issue number3
DOIs
StatePublished - Jul 1994

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ASJC Scopus subject areas

  • Ocean Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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