Meet Drone Shield, an ambitious idea for a $70 drone detection system
On Tuesday, an ambitious aerospace engineer from Washington, DC began seeking donations on Indiegogo to create an “open-source drone detection system.”
The Drone Shield would combine a Raspberry Pi, a signal processor, a microphone, and analysis software to scan for specific audio signatures and compare them against what known drones sound like. (Because obviously a Predator drone is going to sound very different than a small quadcopter.) Once a match is found, the Drone Shield then sends an e-mail or SMS to its owner. As of this writing, the campaign is only closing in on one-tenth of its goal with $301 out $3,500 raised.
John Franklin, the project’s organizer, believes it would cost around $60 to $70 to make one, but he’s hoping to raise funds from other privacy-minded citizens like himself. He notes the idea here is to counter the rising use of drones not only on foreign theaters of war, but also in domestic skies.
"I'm a problem solver and I'm trying to gauge if this is a problem that people are interested in solving,” he told Ars. “The idea here is that it becomes an open-source thing and people could contribute their own signatures.”
Franklin estimated it probably would take “about $100 and two months” to figure out if the idea would work. There are other anti-drone tactics and devices out there, but none quite as cheap as this one—assuming it functions as advertised. Not all experts are convinced.
http://arstechnica.com/gadgets/2013/05/meet-drone-shield-an-ambitious-idea-for-a-70-drone-detection-system/
= new reply since forum marked as read
--imm
It's used for among other things, Moon bounce amateur radio communications.
http://www.qsl.net/dl4yhf/spectra1.html
