False assault on the Bugey nuclear power plant by Greenpeace (July 3, 2018) over Fort Brégançon (July 6), where Emmanuel Macron was spending his holidays, going through the attack of Venezuelan President Nicolas Maduro during speech (August 4), or the disruption of air traffic due to intrusions into airports, the use of drones for malicious purposes is spreading. A new danger from the sky? "The threat is protean and has various levels of seriousness – from privacy to terrorist risk," says Henry de Plinval, director of the drones program at the National Office for Aeronautical Studies and Research (Onera).
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To protect themselves, public authorities and big business are struggling. "The security of the airspace can be schematized in three acts", explains Henry de Plinval. Detection, ie 24-hour surveillance of a given site and the triggering of an alert in the event of an intrusion; identification, to confirm and qualify the threat – is it a simple shooting, espionage, or even a terrorist action? – then to locate the device or the pilot; finally the neutralization, which is concretized by the capture, the jamming or the destruction of the aircraft.
Merge means for near-perfect detection
"There is no panacea in this area, warns the manager.Each situation requires appropriate responses depending on the location (city, countryside, nuclear power plant, airport, prison …), financial means, technical context and available human forces ". For the detection phase, an active radar is generally used – it emits an electromagnetic wave, the sound of which makes it possible to locate any object moving in a given radius.
We can resort to a passive radar, which tracks all the o … Read more on L'Express.fr
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