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Fundamental limits on acoustic source range estimation performance in uncertain ocean channels

Publication ,  Journal Article
Narasimhan, S; Krolik, JL
Published in: Journal of the Acoustical Society of America
January 1, 1995

Matched-field methods which exploit complex multipath propagation models to localize underwater acoustic sources are particularly sensitive to errors in the assumed environmental parameters. In this paper, the Cramer-Rao lower bound (CRLB) is used to determine fundamental limits on the accuracy of range estimates obtained in the presence of uncertain environmental parameters. Theoretical results obtained using an adiabatic normal mode propagation model and a realistic model of sound-speed profile uncertainty indicate that without prior statistical knowledge of the environmental parameters, the CRLB may diverge even when the number of unknowns is less than the number of acoustic modes. When the prior probability distribution of the environmental parameters is available, however, the CRLB indicates a significant improvement in range estimation performance is possible. Numerical evaluation of the bound on range estimation in the presence of sound-speed profile uncertainty is performed both for an ideal waveguide and a realistic shallow-water channel using environmental data collected off the New England coast. © 1995, Acoustical Society of America. All rights reserved.

Duke Scholars

Published In

Journal of the Acoustical Society of America

DOI

ISSN

0001-4966

Publication Date

January 1, 1995

Volume

97

Issue

1

Start / End Page

215 / 226

Related Subject Headings

  • Acoustics
 

Citation

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ICMJE
MLA
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Narasimhan, S., & Krolik, J. L. (1995). Fundamental limits on acoustic source range estimation performance in uncertain ocean channels. Journal of the Acoustical Society of America, 97(1), 215–226. https://doi.org/10.1121/1.412306
Narasimhan, S., and J. L. Krolik. “Fundamental limits on acoustic source range estimation performance in uncertain ocean channels.” Journal of the Acoustical Society of America 97, no. 1 (January 1, 1995): 215–26. https://doi.org/10.1121/1.412306.
Narasimhan S, Krolik JL. Fundamental limits on acoustic source range estimation performance in uncertain ocean channels. Journal of the Acoustical Society of America. 1995 Jan 1;97(1):215–26.
Narasimhan, S., and J. L. Krolik. “Fundamental limits on acoustic source range estimation performance in uncertain ocean channels.” Journal of the Acoustical Society of America, vol. 97, no. 1, Jan. 1995, pp. 215–26. Scopus, doi:10.1121/1.412306.
Narasimhan S, Krolik JL. Fundamental limits on acoustic source range estimation performance in uncertain ocean channels. Journal of the Acoustical Society of America. 1995 Jan 1;97(1):215–226.

Published In

Journal of the Acoustical Society of America

DOI

ISSN

0001-4966

Publication Date

January 1, 1995

Volume

97

Issue

1

Start / End Page

215 / 226

Related Subject Headings

  • Acoustics