WIDEBAND ACTIVE SONAR BEAMFORMING

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$480,000.00
Award Year:
1990
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
8508
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Digital System Resources Inc.
12450 Fair Lakes Cir Ste 500, Fairfax, VA, 22033
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Richard W Carroll
(703) 378-8677
Business Contact:
() -
Research Institution:
n/a
Abstract
BEAMFORMING METHODS IN WHICH THE FAST CONVOLUTION TECHNIQUE IS APPLIED TO EXECUTE MULTICHANNEL TIME DELAY FIR INTERPOLATION FILTERING IS THE SUBJECT OF THIS PROPOSAL. THE METHOD OFFERS THE POTENTIAL FOR EXECUTING CERTAIN PRIOR AND POST BEAMFORMING FIR FILTER-ING OPERATIONS WITHIN THE BEAMFORMER PROCESSING TO ENHANCE OVERALL SYSTEM COMPUTATIONAL EFFICIENCY. TWO FAST CONVOLUTION METHODS BASED ON DIFFERENT APPROACHES TO SYNTHESIZING THE DELAY INTERPOLATION FILTERS ARE PROPOSED FOR PHASE I TRADE-OFF STUDIES. ONE METHOD OFFERS THE POTENTIAL FOR THE DEVELOPMENT OF A PRACTICAL BEAMFORMING STRUCTURE WHICH CAN BE PROGRAMMED TO MAXIMIZE PERFORMANCE IN A WIDE RANGE OF NOISE SOURCE DISTRIBUTIONS. THE METHOD SHOULD PROVIDE FOR ADAPTIVE REJECTION OF SPATIALLY DISCRETE NOISE INTERFERENCE IN THE NEAR TERM. IT ALSO PROVIDES FOR A PRACTICAL SYSTEM TO ADAPTIVELY MAXIMIZE GAIN IN A VARIETY OF COMPLEX, CORRELATED NOISE FIELDS.

* information listed above is at the time of submission.

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