Forward acoustic scattering by moving objects: Theory and experiment

Bo Lei, Kun De Yang, Yuan Liang Ma, Lu Wang

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

The normal mode model for scattering in shallow water is employed to investigate the forward scattering with a target crossing the source-receiver axial line. An experiment was conducted in a littoral environment to analyze forward scattering by a slowly moving object. The theoretical and experimental results show that the sound field aberration takes minimum values if the object is located mid-point along the source-receiver line, whereas it attains its maximum if the object is close to the source or receiver. The total field is either enhanced or suppressed if the object crosses different Fresnel zones. In addition, the duration of shadow-induced aberration is dependent on the width of the first Fresnel zone, which is longest at the mid-point of the source-receiver line.

Original languageEnglish
Pages (from-to)313-319
Number of pages7
JournalChinese Science Bulletin
Volume57
Issue number4
DOIs
StatePublished - Feb 2012

Keywords

  • forward scattering
  • Fresnel zone
  • moving object
  • shadow effect
  • sound field aberration

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