Coherent Multi-Static Active Sonar LRT

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-05-C-0206
Agency Tracking Number: N032-0204
Amount: $589,045.00
Phase: Phase II
Program: SBIR
Awards Year: 2005
Solicitation Year: 2003
Solicitation Topic Code: N03-226
Solicitation Number: 2003.2
Small Business Information
P.O. Box 787, Severna Park, MD, 21146
DUNS: 958055055
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Steve Lease
 Senior Engineer
 (410) 463-7148
Business Contact
 Laurence Riddle
Title: President
Phone: (410) 431-7148
Research Institution
Multistatic sonar technologies are emerging as an important strategy for ASW. Multistatic operations can potentially improve ASW effectiveness in challenging shallow-water environments while allowing critical assets to remain acoustically covert or at a safe standoff distance. The Navy uses multistatic acoustic sensor systems with aircraft and surface ships, in network-centric ASW surveillance missions. Current incoherent systems suffer from high false alarm rates when operating in shallow water. A method of reducing false alarms and not unnecessarily alerting our adversaries is needed. For future multistatic systems, coherent active sonar techniques are being investigated, because of the potential to extract motion target classification clues. Exploiting Doppler in multistatic systems is challenging because of target scattering effects. Increasing the duty cycle results in many potential echoes from the target, and the task of combining these target echoes in the presence of is critical. This project will develop a signal, information and data fusion processing software prototype that will extract Doppler and motion features contained in coherent waveforms. We will use a Likelihood Ratio Tracking track-before-detect approach to optimally combine multiple echoes, in order to form consistent tracks over space and time that discriminate between targets and clutter.

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

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