USA flag logo/image

An Official Website of the United States Government

Non-Plane-Wave noise source localization for horizontal arrays at low frequency…

Award Information

Agency:
Department of Defense
Branch:
Navy
Award ID:
70417
Program Year/Program:
2004 / STTR
Agency Tracking Number:
N045-011-0301
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Applied Physical Sciences Corp.
475 Bridge Street Suite 100 Groton, CT -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2004
Title: Non-Plane-Wave noise source localization for horizontal arrays at low frequency in very shallow water (VSW)
Agency / Branch: DOD / NAVY
Contract: N00014-04-M-0234
Award Amount: $69,993.00
 

Abstract:

Localizing low frequency noise sources in shallow water using a horizontal array is complicated by waveguide dispersion and maneuverability constraints. If the dispersive properties of the sound propagation channel are well known, waveguide effects can be used advantageously for the purpose of localizing sources without requiring a relative change in bearing to the target. Here we propose to investigate the feasibility of using optimal waveguide source localization (OWSL). In this approach, the approximate bearing of a source is first obtained using plane-wave beamforming. Sophisticated processing techniques exploiting broadband waveguide physics and waveguide invariant theory are then used to efficiently refine the bearing estimate and simultaneously estimate the range of the source. Our Phase I effort will include development of a high fidelity system simulation to determine the expected performance of OWSL for representative scenarios assuming expected uncertainties in both the important environmental (e.g., sound speed) and system (e.g., noise levels and sensor locations) parameters. Utilizing a new statistical methodology, we will determine measurement system requirements, such as synthetic array aperture length and measurement sample size, necessary to attain desired design accuracy. A detailed evaluation and demonstration process required for Fleet implementation will also be developed.

Principal Investigator:

Charles Corrado
Principal Scientist
8604403253
jrudzinsky@aphysci.com

Business Contact:

David Horne
Business Manager
8604403253
dhorne@aphysci.com
Small Business Information at Submission:

APPLIED PHYSICAL SCIENCES CORP.
2 State Street, Suite 300 New London, CT 06320

EIN/Tax ID: 010655626
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
Massachusetts Institute of Technolo
77 Massachusetts Avenue
Cambridge, MA 02139
Contact: Charlotte Morse
Contact Phone: (617) 253-3529
RI Type: Nonprofit college or university