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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

Matched field and matched beam source localization using a bottom moored horizontal array

Barlee, R. Matthew S. (Richard Matthew Scott) 10 April 2008 (has links)
Presented is an analysis of the performance of a matched field and matched beam processor in localization of a shallow water source using a 63-element bottom-moored planar array. Two scenarios are considered: in the first, a stationary, submerged CW source is localized in a high SNR environment; in the second, the source is being towed in the presence of multiple ship-generated directional noise sources. Array element localization is carried out using regularized linear inversion on transients from light bulb implosions around the array. The method provides the simplest array shape solution while still fitting the data and initial hydrophone position estimates to a statistically appropriate level. Estimation of geoacoustic parameters is accomplished using a hybrid inversion algorithm producing a robust geoacoustic model which is subsequently used to produce replica acoustic fields for the full field localization methods. Localization proved highly successful for the first scenario, while increased noise and geometrical limitations led to moderate performance in the second scenario.

A channel subspace post-filtering approach to adaptive equalization /

Nadakuditi, Rajesh Rao. January 1900 (has links)
Thesis (S.M.)--Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, and the Woods Hole Oceanographic Institution), 2002. / Includes bibliographical references (p. 151-154).

Link budget analysis for undersea acoustic signaling /

Hansen, Joseph T. January 2002 (has links) (PDF)
Thesis (M.S.)--Naval Postgraduate School, 2002. / Thesis advisor(s): Joseph A. Rice, Kevin B. Smith. Includes bibliographical references (p. 43-44). Also available online.

A selective automatic repeat request protocol for undersea acoustic links /

Kalscheuer, Jon M. January 2004 (has links) (PDF)
Thesis (M.S. in Applied Physics)--Naval Postgraduate School, June 2004. / Thesis advisor(s): Joseph A. Rice, Thomas J. Hofler. Includes bibliographical references (p. 41). Also available online.

Acoustic cymbal transducers-design, hydrostatic pressure compensation, and acoustic performance /

Jenne, Kirk E. January 2004 (has links) (PDF)
Thesis (M.S. in Engineering Acoustics)--Naval Postgraduate School, March 2004. / Thesis advisor(s): Thomas R. Howarth, Dehua Huang. Includes bibliographical references (p. 67-69). Also available online.

Normal mode extraction and environmental inversion from underwater acoustic data /

Neilsen, Tracianne Beesley, January 2000 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2000. / Vita. Includes bibliographical references (leaves 181-187). Available also in a digital version from Dissertation Abstracts.

Link-layer and network-layer performance of an undersea acoustic network at Fleet Battle Experiment-India /

Hartfield, Grant I. January 2003 (has links) (PDF)
Thesis (M.S. in Information Systems and Operations)--Naval Postgraduate School, June 2003. / Thesis advisor(s): Joseph A. Rice, Dan C. Boger. Includes bibliographical references (p. 35). Also available online.

Performance of acoustic spread-spectrum signaling in simulated ocean channels /

Pelekanos, Georgios N. January 2003 (has links) (PDF)
Thesis (M.S. in Electrical Engineering and M.S. in Engineering Acoustics)--Naval Postgraduate School, June 2003. / Thesis advisor(s): Roberto Cristi, Joseph Rice. Includes bibliographical references (p. 107-108). Also available online.

Undersea node localization using node-to-node acoustic ranges in a distributed Seaweb network

Zinkhon, David C. January 2009 (has links) (PDF)
Thesis (M.S. in Engineering Acoustics)--Naval Postgraduate School, March 2009. / Thesis Advisor(s): Rice, Joseph A. "March 2009." Description based on title screen as viewed on April 24, 2009. Author(s) subject terms: Underwater acoustics, Seaweb, Localization, Difference linearization. Includes bibliographical references (p. 97-98). Also available in print.

Signal detection optimization for underwater acoustics /

Adams, Mark D. January 1990 (has links)
Project report (M.S.)--Virginia Polytechnic Institute and State University, 1990. / Abstract. Includes bibliographical references (leaf 56). Also available via the Internet.

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