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"The Defense Advanced Research Projects Agency, or DARPA, has announced that it plans to release a system for tracking unmanned aerial systems called the Aerial Dragnet. While drones are an excellent product for consumers interested in photography, film, or simply flying in general, they pose a regulatory problem. There are currently incredibly advanced tracking systems in place for monitoring high-altitude, high-speed aircraft, but no such system exists for drones and other small unmanned aerial vehicles. Such a technology might be a necessity though, as the unfortunate reality is that people could use drones for illicit purposes. DARPA&amp;#039;s Aerial Dragnet program proposes to institute series of surveillance nodes throughout cities of interest, either in the form of fixed instruments or &amp;quot;long endurance drones.&amp;quot; These nodes would be able to track drones, even without a direct line of sight."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.trendhunter.com/trends/aerial-dragnet>