Submarine Non-Hull Penetrating (Wireless) Hydrophone

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N65538-05-M-0204
Agency Tracking Number: N051-065-1390
Amount: $69,238.00
Phase: Phase I
Program: SBIR
Awards Year: 2005
Solicitation Year: 2005
Solicitation Topic Code: N05-065
Solicitation Number: 2005.1
Small Business Information
879 Ward Drive, Santa Barbara, CA, 93111
DUNS: 063802250
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Donald Norris
 Transducer Department Manager
 (805) 690-5353
Business Contact
 Michael Ornee
Title: President
Phone: (805) 690-5300
Research Institution
An acoustic device capable of acoustically transmitting wide-bandwidth information through the pressure hull of a submarine requires careful design but appears feasible based on prior work performed at Sonatech. The current application addresses only out-board to in-board, or wet-side to dry-side, communication; however, the system can be easily modified for two-way communication-a vital capability in emergency situations. Sonatech's approach is to focus on the fundamental problem that limits channel bandwidth for this application: interference from bounce-path signals off the hull interfaces and discontinuities. In our initial tests we will utilize COTS NDT transducers, but we will use acoustic modeling and analysis to design and develop custom transducers that are accurately impedance-matched to the hull and that provide narrow beams-these features strongly reduce bounce path interference. Our analysis, modeling, and testing will address all of the important design parameters: operating frequency and achievable channel bandwidth, impedance matching the front and back faces of the transducers, signal encoding and protocol, and system power requirements.

* Information listed above is at the time of submission. *

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