title: Acoustic identification of buried underwater unexploded ordnance using a numerically trained classifier (L).
abstract: Using a finite element-based structural acoustics code, simulations were carried out for the acoustic scattering from an unexploded ordnance rocket buried in the sediment under 3 m of water. The simulation treated 90 rocket burial angles in steps of 2°. The simulations were used to train a generative relevance vector machine (RVM) algorithm for identifying rockets buried at unknown angles in an actual water/sediment environment. The trained RVM algorithm was successfully tested on scattering measurements made in a sediment pool facility for six buried targets including the rocket at 90°, 120°, and 150°, a boulder, a cinderblock, and a cinderblock rolled 45° about its long axis.
authors.affiliation: Excet, Incorporated, 8001 Braddock Road, Suite 105, Springfield, Virginia 22151, USA. joseph.bucaro.ctr@nrl.navy.mil
authors.forename: Joseph A
authors.initials: JA
authors.lastname: Bucaro
authors.forename: Zachary J
authors.initials: ZJ
authors.lastname: Waters
authors.forename: Brian H
authors.initials: BH
authors.lastname: Houston
authors.forename: Harry J
authors.initials: HJ
authors.lastname: Simpson
authors.forename: Angie
authors.initials: A
authors.lastname: Sarkissian
authors.forename: Saikat
authors.initials: S
authors.lastname: Dey
authors.forename: Timothy J
authors.initials: TJ
authors.lastname: Yoder
mesh_terms: D000162:Acoustics; D000465:Algorithms; D054042:Bombs; D003198:Computer Simulation; D053834:Explosive Agents; D020342:Finite Element Analysis; D019015:Geologic Sediments; D008962:Models, Theoretical; D009038:Motion; D009716:Numerical Analysis, Computer-Assisted; D009792:Oceans and Seas; D012542:Scattering, Radiation; D012815:Signal Processing, Computer-Assisted; D013016:Sound; D013018:Sound Spectrography; D060388:Support Vector Machine; D013997:Time Factors; D014867:Water
chemical_list: D053834:Explosive Agents; D014867:Water