ACOUSTIC DIRECTION AND RANGE TRANSDUCER FOR DIVERS

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$350,000.00
Award Year:
1994
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
20391
Agency Tracking Number:
20391
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Po Box 8175, Charlottesville, VA, 22906
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
David W. Gerdt, Phd
(804) 296-7000
Business Contact:
() -
Research Institute:
n/a
Abstract
The contractor has patented technology for a unique process that directly converts a two-dimensional acoustic disturbance, such as a wave front, into an intensity-mapped visible image in real-time without electronic circuitry; i.e., it is a direct pressure gradient imager. This device can allow a small, battery powered acoustic source to be easily located and ranged using a small flashlight sized imager. The imager relies on the piezo-dichroic properties of a continuous layer of a dichroic material thin film that serves as both the sensor and the display. The image can be viewed directly or remotely by using a CCD camera. The source would be placed at a location as a position marker. A diver, using a hand held locator, could identify or signal several other divers with a slight sophistication of the basic device. The phenomenon used allows sensitivity levels of 10^-14 w sec/cm^2. In Phase I the contractor will investigate the engineering specifications applicable to the design of a small, hand-held, real-time, ranging acoustic imager for diver location and signaling in conditions of limited optical visibility. A brassboard model will be produced for the later prototype versions anticipated in Phase II. The extension of this concept to a full acoustic imager for use as a remote mine locator would allow the viewing of mines submerged in low or zero visiblity water.

* information listed above is at the time of submission.

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