Broadband acoustic scattering measurements of underwater unexploded ordnance (UXO)

J. A. Bucaro, B. H. Houston, M. Saniga, L. R. Dragonette, T. Yoder, S. Dey, L. Kraus, L. Carin

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

In order to evaluate the potential for detection and identification of underwater unexploded ordnance (UXO) by exploiting their structural acoustic response, we carried out broadband monostatic scattering measurements over a full 360° on UXO's (two mortar rounds, an artillery shell, and a rocket warhead) and false targets (a cinder block and a large rock). The measurement band, 1-140 kHz, includes a low frequency structural acoustics region in which the wavelengths are comparable to or larger than the target characteristic dimensions. In general, there are aspects that provide relatively high target strength levels (∼-10 to -15 dB), and from our experience the targets should be detectable in this structural acoustics band in most acoustic environments. The rigid body scattering was also calculated for one UXO in order to highlight the measured scattering features involving elastic responses. The broadband scattering data should be able to support feature-based separation of UXO versus false targets and identification of various classes of UXO as well. © 2008 Acoustical Society of America.
Original languageEnglish (US)
Pages (from-to)738-746
Number of pages9
JournalJournal of the Acoustical Society of America
Volume123
Issue number2
DOIs
StatePublished - Feb 11 2008
Externally publishedYes

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