Expendable Acoustic Source for AUV Based Geoacoustic and Geotechnical Survey Operations

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$149,997.00
Award Year:
2012
Program:
STTR
Phase:
Phase I
Contract:
N00014-12-M-0371
Award Id:
n/a
Agency Tracking Number:
N12A-017-0048
Solicitation Year:
2012
Solicitation Topic Code:
N12A-T017
Solicitation Number:
2012.A
Small Business Information
317 West Forsyth St., Jacksonville, FL, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
869164939
Principal Investigator:
GaryDonoher
Program Manager
(904) 475-0094
gdonoher@adndinc.com
Business Contact:
KarenPicard
Contract Admininistrator
(904) 475-0094
kpicard@adndinc.com
Research Institute:
University Of Miami
Harry DeFerrari
4600 Rickenbacker Cswy
Miami, FL, 33149-
(305) 421-4644

Abstract
Our team proposes a unique expendable acoustic source comprised of flexural disc technology in a close packed arrangement that allows for a reduction in resonant frequency and an increase in useful bandwidth. This array will be designed to couple as much energy as possible into the bottom sediments, while coupling as little energy as possible directly into the surrounding water column. This is a difficult task for an unspecified and potentially unknown bottom type, but an array of flexural discs designed to sit on the sea floor will make it possible to achieve this goal in many cases. Our source will generate continuous M-sequence waveforms which are excellent for geoacoustic inversion. M-sequence waveforms will be used to provide significant information on the structure of bottom sediments by simultaneously providing very high resolution in both time delay of arrival and Doppler space, limited only by the coherence of the medium. M-sequence waveforms exhibit a white spectrum and, after the specified detection processing, will provide the desired thumbtack ambiguity function, i.e., high resolution in both time of arrival and Doppler space.

* information listed above is at the time of submission.

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