Available Technology

Large Area Imager

One of the major challenges faced by the DHS is the remote detection of radioactive materials that could be used in a nuclear or radiological weapon of mass destruction. Traditional technologies rely on large detectors and proximity imaging (i.e., associating the source location with the location at which count rates are highest). Such techniques are susceptible to local variations in background count rates, and thus have high false-alarm rates or low sensitivity.
Patent Abstract: 
The LAI technology uses a one-dimensional, coded-aperture imaging system to overcome this difficulty. The imaging allows background variations associated with distributed sources (e.
Internal Laboratory Ref #: 
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