HIGH RESOLUTION COHERENT ACOUSTIC DOPPLER CURRENT PROFILER

Award Information
Agency:
Department of Defense
Branch
Defense Advanced Research Projects Agency
Amount:
$49,910.00
Award Year:
1987
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
6326
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Rd Instruments
9855 Businesspark Ave, San Diego, CA, 92131
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
FRANCIS ROWE
(619) 693-1178
Business Contact:
() -
Research Institution:
n/a
Abstract
THIS RESEARCH AND DEVELOPMENT PROJECT WILL STUDY THE FEASIBILITY OF DEVELOPING A HIGH RESOLUTION COHERENT ACOUSTIC DOPPLER CURRENT PROFILER (HRCADCP) SUITABLE FOR MEASURING PROFILES OF 3-AXES VELOCITY OVER SHORT RANGES WITH HIGH ACCURACY, SPATIAL RESOLUTION AND SAMPLING RATE. CAPABILITY FOR MEASURING CURRENT PROFILES FROM THE OCEAN'S SURFACE TO A 1-METER DEPTH WITH VELOCITY ACCURACY OF ORDER A FEW MM/S, SPATIAL RESOLUTION OF A FEW MM AND SAMPLING RATES OF ABOUT 10 HZ WILL BE SOUGHT. THE PROPOSED APPROACH USES A BISTATIC PULSECOHERENT ACOUSTIC DOPPLER SYSTEM WHICH UTILIZES AN ARRAY OF FOUR RECEIVER ASSEMBLIES TO MEASURE DOPPLER FREQUENCIES FROM ECHOES SCATTERED FROM THE WATERMASS VOLUME ENSONIFIED BY A SINGLE TRANSMIT TRANSDUCER AT THE CENTER OF THE ARRAY. THE PRIMARY OBJECTIVES OF PHASE I ARE TO ANALITICALLY DEFINE AND QUANTIFY THE SOURCES OF ERROR IN THE MEASURMENT PROCESS, TO EXPLORE THE RELATIVE MERITS AND PERFORM-ANCE OF ALTERNATIVE SYSTEM GEOMETRIES AND SIGNAL PROCESSING SCHEMES, AND TO CONDUCT AN EXPERIMENT TO EVALUATE THE PRACTICAL FEASIBILITY AND PERFORMANCE OF SYSTEM.

* information listed above is at the time of submission.

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