• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 52
  • 4
  • 3
  • 1
  • Tagged with
  • 84
  • 84
  • 50
  • 19
  • 12
  • 10
  • 10
  • 10
  • 10
  • 9
  • 9
  • 8
  • 7
  • 7
  • 7
  • 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.
1

Bandwidth optimization of underwater acoustic communications systems

Houdeshell, Jack E. 03 1900 (has links)
Approved for public release; distribution is unlimited. / Current underwater acoustic communication systems operate in the frequency band of 1 - 10 kHz and utilize various forms of signal processing to improve data rates. In this work, the influence of the environment on long-range propagation of acoustic signals will be examined over the band of 1-5 kHz. The transmission loss (Th) as a function of range over the bandwidth will be one measure to determine the optimal operating character of the communications channel. Additionally, estimates of signal variance over the bandwidth as a function of range will be computed. The variance will be generated from source platform motion and interface roughness. Particular attention will be paid to the 2 - 4 kHz band of certain operating systems for long-range transmission / Lieutenant, United States Navy
2

Comparison of channel equalization filtering techniquies in underwater acoustic communications /

Kuchler, Ryan J. January 2002 (has links) (PDF)
Thesis (M.S.)--Naval Postgraduate School, 2002. / Thesis advisor(s): Charles W. Therrien, Kevin B. Smith. Includes bibliographical references (p. 147-149). Also available online.
3

Direct-sequence spread-spectrum modulation for utility packet transmission in underwater acoustic communication networks /

Duke, Peter S. January 2002 (has links) (PDF)
Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, September 2002. / Thesis advisor(s): Roberto Cristi, Joseph Rice. Includes bibliographical references (p. 129-130). Also available online.
4

Bandwidth optimization of underwater acoustic communications systems

Houdeshell, Jack E. January 2001 (has links) (PDF)
Thesis (M.S. in Engineering Acoustics) Naval Postgraduate School, March 2001. / Thesis advisor(s): Smith, Kevin B. ; Nagle, Daniel T. "March 2001." Includes bibliographical references (p. 39-40). Also Available in print.
5

Event-driven simulation and analysis of an underwater acoustic local area network

Goh, Meng Chong. January 2010 (has links) (PDF)
Thesis (M.S. in Engineering Acoustics)--Naval Postgraduate School, June 2010. / Thesis Advisor(s): Rice, Joseph A. "June 2010." Description based on title screen as viewed on July 13, 2010. Author(s) subject terms: Communications network, sensor network, acoustic communications, undersea sensors, simulation, Seastar, Seaweb Includes bibliographical references (p. 89-90). Also available in print.
6

Detection of binary phase-shift keying signal in multioath propagation /

Jung, Du San. January 2002 (has links) (PDF)
Thesis (M.S.)--Naval Postgraduate School, 2002. / Thesis advisor(s): Charles W. Therrien, Murali Tummala. Includes bibliographical references (p. 83-84). Also available online.
7

Direct-sequence spread-spectrum acoustic communications with CRV Decomposition /

Angelopoulos, Pavlos. January 2004 (has links) (PDF)
Thesis (M.S. in Electrical Engineering and M.S. in Engineering Acoustics)--Naval Postgraduate School, June 2004. / Thesis advisor(s): Roberto Cristi, Kevin B. Smith. Includes bibliographical references (p. 91-94). Also available online.
8

Predicting the effects of sea surface scatter on broad band pulse propagation with an ocean acoustic parabolic equation model /

Ead, Richard M. January 2004 (has links) (PDF)
Thesis (M.S. in Engineering Acoustics)--Naval Postgraduate School, June 2004. / Thesis advisor(s): Kevin B. Smith. Includes bibliographical references (p. 57-58). Also available online.
9

Implementation of an underwater digital acoustic telemetry receiver /

McAvoy, Raymond A., January 2002 (has links)
Thesis (M.S.) in Electrical Engineering--University of Maine, 2002. / Includes vita. Includes bibliographical references (leaf 104).
10

Shallow under water communication with passive phase conjugation and iterative demodulation and decoding

Keeser, Christopher Corson, January 2008 (has links) (PDF)
Thesis (M.S. in electrical engineering)--Washington State University, December 2008. / Title from PDF title page (viewed on Jan. 21, 2009). "School of Electrical Engineering and Computer Science." Includes bibliographical references (p. 51-53)

Page generated in 0.191 seconds