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Accession Number ADA571647
Title MURI: Impact of Oceanographic Variability on Acoustic Communications.
Publication Date Sep 2011
Media Count 15p
Personal Author W. S. Hodgkiss
Abstract LONG-TERM GOALS: Couple together analytical and numerical modeling of oceanographic and surface wave processes, acoustic propagation modeling, statistical descriptions of the waveguide impulse response between multiple sources and receivers, and the design and performance characterization of underwater acoustic digital data communication systems in shallow water. OBJECTIVES: Develop analytical/numerical models, validated with experimental data, that relate short-term oceanographic variability and source/receiver motion to fluctuations in the waveguide acoustic impulse response between multiple sources and receivers and ultimately to the capacities of these channels along with space-time coding and adaptive modulation/demodulation algorithms that approach these capacities. APPROACH: The focus of this research is on how to incorporate an understanding of short-term variability in the oceanographic environment and source/receiver motion into the design and performance characterization of underwater acoustic, diversity-exploiting, digital data communication systems. The underlying physics must relate the impact of a fluctuating oceanographic environment and source/receiver motion to fluctuations in the waveguide acoustic impulse response between multiple sources and receivers and ultimately to the channel capacity and the design and performance characterization of underwater acoustic digital data communication systems in shallow water.
Keywords Acoustic communications
Acoustic properties
Acoustic waves
Acoustics
Adaptive systems
Algorithms
Capacity(Quantity)
Channels
Data bases
Data transmission systems
Demodulation
Digital communications
Digital systems
Environments
Experimental data
Impact
Impulse noise
Information systems
Mathematical models
Models
Modulation
Motion
Ocean environments
Propagation
Receivers
Response
Sources
Surface waves
Underwater
Validation
Variations
Waveguides

 
Source Agency Non Paid ADAS
NTIS Subject Category 47C - Physical & Chemical Oceanography
46A - Acoustics
Corporate Author Scripps Institution of Oceanography, La Jolla, CA. Marine Physical Lab.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1316
Contract Number N00014-07-1-0739 N00014-11-1-0364

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