Intelligent Radiation Sensor System (IRSS) advanced technology demonstrator (ATD)

In response to the Domestic Nuclear Detection Office's (DNDO) BAA 09-102 Passport Systems, Inc. of Billerica, MA has developed and tested a prototype system of networked portable spectroscopic radiation detectors designed to improve the detection, localization, and identification of potential radiological threats. A system of this nature is primarily targeted to situations where it is not feasible to direct traffic through portal radiation detection systems, e.g. large events, search team objectives, etc. The capability to intelligently network individual portable detectors and fuse their data using advanced algorithms and COTS hardware has been shown within this program to significantly increase the effectiveness of an assortment of portable radiation detectors in a variety of NORM (naturally occurring radioactive material) backgrounds. An overview of current work will be provided in two parts: 1) A review of the system design, including trade space analysis, of both the hardware and algorithmic components; and 2) Presentation of data and results to date focusing on the improvement afforded by the networked data fusion.