Geoacoustic inversion of ship radiated noise in shallow water using data from a single hydrophone.
The Centre for Maritime Research and Experimentation conducted a geoacoustic inverse experiment in the Mediterranean Sea in the summer of 2012. Among the objectives was to employ an autonomous underwater vehicle to collect acoustic data to invert for properties of the seafloor. Inversion results for the compression wave speed in the bottom and the source spectrum of the R/V Alliance during a close approach to the bottom moored vehicle are presented. The estimated wave speed was 1529 m/s (σ=10). The source spectrum of the Alliance was estimated across more than six octaves of frequency.
Sensors and Sonar Systems Department, Naval Undersea Warfare Center, 1176 Howell Street, Newport, Rhode Island 02841 steven.crocker@navy.mil.
Steven E
SE
Crocker
Centre for Maritime Research and Experimentation, viale San Bartolomeo, La Spezia, 19126, Liguria, Italy nielsen@cmre.nato.int.
Peter L
PL
Nielsen
Department of Ocean Engineering, University of Rhode Island, 15 Receiving Road, Narragansett, Rhode Island 02882 miller@egr.uri.edu.
James H
JH
Miller
Electrical and Computer Engineering, Portland State University, 1900 SW 4th Avenue, Portland, Oregon 97201 siderius@pdx.edu.
Martin
M
Siderius