Sponsor
Support from the Office of Naval Research Ocean Acoustics Program is gratefully acknowledged
Published In
Journal of the Acoustical Society of America Express Letters
Document Type
Article
Publication Date
3-2013
Subjects
Ocean tomography, Sonar, Underwater acoustics
Abstract
Predicting transmission loss in the ocean often strongly depends on the bottom loss. Bottom loss can be estimated using ocean noise and vertical array beam-forming [Harrison and Simons, J. Acoust. Soc. Am. 112, 1377–1389 (2002)]. With finite length arrays, the bottom loss estimate using this method can be smoothed due to beam widths. This paper describes how the noise coherence function can be synthetically expanded, which is similar to extending the length of an array. A full wave ocean noise model is used to demonstrate, in simulation, how this leads to improvements in the resolution of bottom loss estimates.
DOI
10.1121/1.4774074
Persistent Identifier
http://archives.pdx.edu/ds/psu/12058
Citation Details
Siderius, M., Muzi, L., Harrison, C. H., & Nielsen, P. L. (2013). Synthetic array processing of ocean ambient noise for higher resolution seabed bottom loss estimation. Journal Of The Acoustical Society Of America, 133(3), EL149-EL155
Description
This is the publisher's final PDF. Copyright 2013 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in JJ. Acoust. Soc. Am. 133, EL149 and may be found at: http://dx.doi.org/10.1121/1.4774074