PHASED ARRAY DOPPLER CURRENT PROFILER

Award Information
Agency:
National Science Foundation
Branch
n/a
Amount:
$237,944.00
Award Year:
1992
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
11849
Agency Tracking Number:
11849
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
9855 Business Park Ave, San Diego, CA, 92131
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Francis Rowe
President
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
THIS PROPOSAL REQUESTS PHASE I FUNDING TO DEMONSTRATE THE FEASIBILITY OF DEVELOPING AN ACOUSTIC DOPPLER CURRENT PROFILER (ADCP) WITH TWICE THE DEPTH RANGE OF PRESENT INSTRUMENTS. THIS WILL REQUIRE CUTTING THE OPERATING FREQUENCY IN HALF, AND DOUBLING THE TRANSDUCER APERTURE FOR EACH BEAM. TO KEEP THE SIZE OF THE TRANSDUCER MANAGABLE, WE PROPOSE TO DESIGN A NEW PHASED ARRAY TRANSDUCER WHICH WILL GENERATE ALL FOUR BEAMS FROM A SINGLE SET OF ELEMENTS, USING ONLY 90-DEGREE PHASE SHIFTS. IN PHASE I WE WILL EVALUATE THE POTENTIAL PERFORMANCE AND COST OF THIS DESIGN. CRITICAL ISSUES ARE TRANSDUCER SIDELOBE LEVELS, BEAM-TO-BEAMCROSSTALK, SIMPLICITY OF THE ELECTRICAL NETWORK, AND THE INCREASE IN SHIP'S NOISE WITH LOWER OPERATING FREQUENCIES. BOTH AN ANALYTICAL EVALUATION AND AN EXPERIMENTAL DEMONSTRATION OF A PROTOTYPE PHASED ARRAY TRANSDUCER WILL BECONDUCTED.

* information listed above is at the time of submission.

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