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Physics-based Modeling of Acoustic Reverberation in the Littoral Environment

Award Information

Agency:
Department of Defense
Branch:
Navy
Award ID:
65183
Program Year/Program:
2005 / STTR
Agency Tracking Number:
N033-0206
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
MARINE ACOUSTICS, INC.
809 Aquidneck Avenue Middletown, RI 02842
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 2005
Title: Physics-based Modeling of Acoustic Reverberation in the Littoral Environment
Agency / Branch: DOD / NAVY
Contract: N00014-04-C-0398
Award Amount: $499,999.00
 

Abstract:

Underwater acoustic modeling plays an essential role in the design, development, test, and operation of sonar systems. Active acoustic clutter can increase the sonar false alert rate or equivalently decrease the probability of detection/classification, and is a key issue in the development and utility of active sonar systems. The ability to predict reverberation and clutter is inseparably tied to other modeling tasks, including propagation modeling as well as boundary and volume characterization. The system sonar equation method supports development of a virtual acoustic environment and can be used to produce time series data for examination of the reverberation and clutter influence in the sonar system's operating parameters. A multi-tiered approach will be used, including: 1) physics-based clutter research (bottom clutter and volume clutter; 2) development of algorithms to generate stochastic realizations of bathymetry and volume scattering features; 3) development of a semi-deterministic reverberation model; 4) development of a module to incorporate stochastic clutter into a deterministic reverberation output; and 5) development of a Parabolic-Equation/Normal-Mode module. The overall objective is to develop and incorporate physics-based reverberation and clutter modeling approaches into current system sonar equation and propagation models used by the sonar designer, planner, and operator.

Principal Investigator:

William T. Ellison
Chief Scientist
8605675491
bill.ellison@marineacoustics.com

Business Contact:

Bernard L. Patterson
Vice President
4018477508
bernard.patterson@marineacoustics.c
Small Business Information at Submission:

Marine Acoustics, Inc.
809 Aquidneck Avenue Middletown, RI 02842

EIN/Tax ID: 042993452
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
JOHNS HOPKINS UNIV. APPLIED PH
11100 Johns Hopkins Rd.
Laurel, MD 20723
Contact: Ruth E. Nimmo
Contact Phone: (240) 228-5974
RI Type: Nonprofit college or university