The widespread availability of consumer grade drones in the recent time has lead to new security and surveillance challenges. The detection and localization of these unmanned aerial vehicles (UAV) mark an essential step to identify possible risks at an early stage before taking appropriate countermeasures. This paper describes the results of an experimental trial conducted to examine the detectability of small UAV using a GSM (Global System for Mobile Communications) based passive coherent location (PCL) system.
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