Adaptive Beamforming for Multistatic Active Sonar

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N/A
Agency Tracking Number: 32725
Amount: $69,134.00
Phase: Phase I
Program: SBIR
Awards Year: 1996
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
2001 Jefferson Davis Highway, Suite 610, Arlington, VA, 22202
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Stephen S. Lane
 (703) 415-2676
Business Contact
Phone: () -
Research Institution
Amron and its subcontractor BBN propose to show the feasibility of a broadband time-domain adaptive beamformer (ABF) to suppress uncorrelated narrowband sources and multipaths from correlated impulsive sources. The work is motivated by political developments which have emphasized warfare in littoral areas, where a key problem facing active sonar is scattering from topographic features. Active sonar receivers must use adaptive beamforming to suppress this interference. Unlike other AM, Amron's ABF suppresses both uncorrelated noise and broadband correlated interference from explosive sources without signal suppression. It improves echo to noise ratios without degrading echoes and simultaneously suppress false alarms from multipathed and other off-azimuth sources. The ABF was developed by and is available to Amron now at the Naval Research Laboratory. The proposed tasks are data collection, adapting the ABF to the multistatic active case, optimizing the ABF on a training data set, evaluating it on another data set, writing a final report, and optionally, developing a beam based ABF. In Phase II, we will implement and test a real-time optimized beam based ABF on dedicated Navy hardware. The ABF may find other applications in nuclear test monitoring and geophysical exploration

* Information listed above is at the time of submission. *

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