Estimating and removing colorations from the deconvolved impulse response of an underwater acoustic channel

TitleEstimating and removing colorations from the deconvolved impulse response of an underwater acoustic channel
Publication TypeJournal Article
Year of Publication2017
AuthorsGemba K.L, Nosal E.M, Reed T.R
JournalJournal of the Acoustical Society of America
Volume141
PaginationEL6-EL10
Date Published2017/01
Type of ArticleArticle
ISBN Number0001-4966
Accession NumberWOS:000395308700002
Abstract

The impulse response (IR) of an acoustic channel can be obtained by cross-correlating the received signal with the broadband excitation signal in unfavorable noise conditions. However, the deconvolved IR is colored by the IRs of the combined electrical equipment. This letter presents a time domain approach using pre-computed filters to whiten the unknown coloration in order to obtain the channel's time domain waveform. The method is validated with an image-source model and the IR of the channel is recovered with spectral root mean square error of -27 dB. Data results obtained from a pool experiment with non-calibrated equipment yield a whitened IR with standard deviation of 0.9 dB (30-68 kHz band). (C) 2017 Acoustical Society of America

DOI10.1121/1.4973311
Student Publication: 
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