Award Information
Agency: Department of Defense
Branch: Navy
Contract: N/A
Agency Tracking Number: 25721
Amount: $60,814.00
Phase: Phase I
Program: SBIR
Awards Year: 1994
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
200 Boston Avenue, Suite 2500, Medford, MA, 02155
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 John E. Cole, Iii
 (617) 396-1421
Business Contact
Phone: () -
Research Institution
The ability to survey ocean acoustic fields with directive hydrophones is advantageous for rejection of multipath arrivals, for resolving left-right ambiguity in towed arrays, and for improving the received signal-to-noise ratio. Under this Phase I study, a concept will be evaluated for achieving a compact directive hydrophone for towed array or sonobuoy application. The proposed cylindrical hydrophone has two innovative features, the use of a shaped piezoelectric material to sense specific multipole components of the pressure field and the conditional combination of multipole signals to achieve optimal directivity. Circumferentially directive hydrophones would be beamformed in the conventional manner to achieve axial directivity. The study will evaluate optimal use of piezoelectric material in the sensor, requirements for multipole sensor backing, sensor noise, fabrication tolerances, and system integration requirements.

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

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