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Detecting Electronic Initiators Using Electromagnetic Emissions

Author(s): Colin Stagner (Missouri S&T, USA), Sarah Seguin (University of Kansas, USA), Steve Grant (Missouri S&T, USA) and Daryl Beetner (Missouri S&T, USA)
Copyright: 2014
Pages: 31
EISBN13: 9781466663909

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Abstract

The accurate and timely discovery of radio receivers can assist in the detection of radio-controlled explosives. By detecting radio receivers, it is possible to indirectly infer the presence of an explosive device. Radio receivers unintentionally emit low-power radio signals during normal operation. By using a weak stimulation signal, it is possible to inject a known signal into these unintended emissions. This process is known as stimulated emissions. Unlike chemical traces, these stimulated emissions can propagate through walls and air-tight containers. The following case study discusses methods for detecting and locating two different types of radio receivers. Functional stimulated emissions detectors are constructed, and their performance is analyzed. Stimulated emissions are capable of detecting super-regenerative receivers at distances of at least one hundred meters and accurately locating superheterodyne receivers at distances of at least fifty meters. These results demonstrate a novel technique for detecting potential explosive threats at stand-off detection distances.

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