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Physical Sciences Inc. (PSI) has been awarded a contract from DARPA for the enhancement and maturation of BioSIGMA, a persistent early-warning capability for the detection and identification of aerosolized biological warfare agents.

The BioSIGMA technology utilizes PSI’s DisperseNET, an advanced suite of algorithms that correlate spatio-temporal sensor responses with real-time physical dispersion modeling to estimate relevant source terms, including release location and plume extent. BioSIGMA uses this dispersion modeling to power real-time simulations where bio point-sensor and anemometer measurements are then fused within a Bayesian Sequential Estimation framework to reduce alarms from clutter and confusers by an order of magnitude. The capability also improves the accuracy of threat decisions and has been demonstrated to achieve a 1 in 30-day false alarm rate at the network-level.

During this effort, PSI will update DisperseNET with a machine-learning based computational fluid dynamics solver that is capable of reproducing high-quality outputs on the order of milliseconds, compared to tens of minutes for traditional software. Additionally, this effort will enhance BioSIGMA by implementing simulation support for mobile sensor platforms, and developing a data-driven normalcy modeling approach for BWA confusers in cluttered urban environ¬ments. Finally, PSI will update BioSIGMA for enhanced correlation of species identification outputs from emerging BWA sensing technologies.

For more information, contact:

Dr. Bogdan Cosofret
Vice President, Detection Systems
cosofret@psicorp.com
Physical Sciences Inc.
Telephone: (978) 689-0003