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An Underwater Threat Detection System Employing Low-Cost Sensing and Advanced…

Award Information

Department of Homeland Security
Award ID:
Program Year/Program:
2005 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Toyon Research Corp.
6800 Cortona Drive Goleta, CA -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2005
Title: An Underwater Threat Detection System Employing Low-Cost Sensing and Advanced Algorithms
Agency: DHS
Contract: NBCHC050134
Award Amount: $100,000.00


A vast array of high-value installations are situated within or near waterways. With such a large number of vulnerable targets, current threat detection schemes are too costly to provide sufficient levels of protection. At the same time, with 95% of material goods arriving via ports and waterways, any new system must offer sufficient performance to prove effective in such an active environment. A new paradigm in identification and localization of targets of interest is the use of large numbers of low-cost distributed sensors rather than single high-fidelity sensors. This proposal seeks to provide an autonomous system that mates arrays of underwater transducers to novel fusion, tracking, and target classification algorithms. Our sensing approach is based on the concept of active forward scattering. Sets of measurements from the sensor array are passed to a central control center, which can be located on-or off-site and uses COTS computer hardware. The particle filter will be used for fusion and tracking due to the ease with which it can manage nonlinear measurements and negative information. A Bayesian network will be used for target classification because the algorithm can incorporate an array of target attributes including signature, velocity, bearing, maneuverability, etc.

Principal Investigator:

Richard Cagley

Business Contact:

Marcella Lindbery
Small Business Information at Submission:

Toyon Research Corporation
75 Aero Camino Suite A Goleta, CA 93117

Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No