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Pier-Side, Bow Sonar Calibration Methodology for Wave Piercing Hull Forms

Award Information

Agency:
Department of Defense
Branch:
Navy
Award ID:
76936
Program Year/Program:
2006 / SBIR
Agency Tracking Number:
N062-139-0803
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
BTech Acoustics LLC
17 Surrey Rd. Barrington, RI -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2006
Title: Pier-Side, Bow Sonar Calibration Methodology for Wave Piercing Hull Forms
Agency / Branch: DOD / NAVY
Contract: N65538-07-M-0051
Award Amount: $69,998.00
 

Abstract:

Existing near-field calibration methods for cylindrical MF and HF bow arrays are not easily applied to combatant ships with complex hull forms. The objective of this proposed project is to develop and deliver a cost effective in-situ system for providing sonar transducer acoustic calibration and quality monitoring. The output is a sonar element calibration or verification that will be fed into an array analysis program. The degradation in array performance due to the failure or performance decrease (as might be due to aging, delamination, flooding, shock, etc.) of individual transducer elements will be ultimately predicted with an array performance model. Our proposed method is called the VIP-Delta-Z method and is based on measuring the voltage, current and phase (VIP) of elements within the array to determine the complex admittance or impedance (see "On the methods of experimental investigating of acoustical interaction between transducers," Boris Aronov, J. Acoust. Soc. Am., Published, June 2006). The method involves measuring the mutual radiation impedances between elements in the array, which will permit a self calibration and monitoring of changes to the impedances (Delta-Z) as a function of time or different electrical and acoustical loading conditions.

Principal Investigator:

David A. Brown
President
4012452282
dbAcoustics@cox.net

Business Contact:

David A. Brown
President
4012452282
dbAcoustics@cox.net
Small Business Information at Submission:

BTECH ACOUSTICS
17 Surrey Rd Barrington, RI 02806

EIN/Tax ID: 050477740
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No