Tracking Nuclear Threats in Security Camera Networks (TNT-SCAN)

Implementing continuous nuclear and radiological monitoring systems that support automatic detection and tracking of potential nuclear threats is\ntraditionally associated with a high operational burden. Sensors are typically monitored by dedicated personnel, who must investigate detection events\nin a timely manner. High nuisance alarm rates can rapidly overwhelm already taxed law enforcement personnel, and ambiguities in a signal's origin\nlimit the reliability of actionable information, particularly in a cluttered urban environment with many moving objects.\nCharles River Analytics and Passport Systems propose to develop a system for Tracking Nuclear Threats in Security Camera Networks (TNT-SCAN)\nthat enables continuous, real-time monitoring of radiological sources in complex urban environments. The system augments an existing network of\nvideo cameras with a distributed network of commercial off-the-shelf (COTS) radiation detectors. A video processing subsystem detects and tracks\nobjects in video streams provided by a third-party video management system (VMS) and passes track data to a radiation processing subsystem, which\ndetects, localizes, and identifies threat sources. A graphical user interface provides security personnel with interactive threat reports that include\nhistorical track data, enabling efficient review, verification, and escalation of detection events. The proposed system builds on multiple recent advances\nin video analytics and radiation detection techNlogies, including a multi-modal approach to monitoring that has been demonstrated in complex, mixedtraffic environments. The envisioned end product represents a natural extension of existing product lines developed by our team, and is expected to appeal stron+Y5gly to stakeholders of relevant security systems.