[ExI] the eagles are coming!

spike spike66 at att.net
Wed Feb 10 18:38:12 UTC 2016



From: extropy-chat [mailto:extropy-chat-bounces at lists.extropy.org] On Behalf Of William Flynn Wallace


​>…Thanks for all the info but I think you ducked the question (pun intended).  Or maybe you don't know just how low a radar can detect something.​..

What I meant was that radar isn’t the right tool for spotting low and slow camera drones, the kind of stuff you can train eagles to foil.  Radar waves are too long for that.  Those are better at spotting planes way out there.  For that kind of thing, you would use a microwave emitter/receiver, and move up from there.  A toy drone would be easy to spot a mile away with a microwave detector, and the whole rig is small enough to fit in the back of a light pickup truck.

If someone is speechifying and a bad guy wanted to launch from a couple km out, fly in close and hand her a small  but deadly explosive device for instance, it would be easy to set up a dual spectrum or multispectrum detector and the means to foil that plan.  I do hope this protection system is used.

>…Is 'under the radar' still applicable?  Or maybe it would be a satellite?  I know they can read newspapers from up there​.  But can they scan for low flying drones?  Our defense dept. has to be working on that.


Ja there are some types of radar planes can get under, but consider what radar was developed for: seeing a bunch of WW2-style bombers coming in at a couple hundred knots while they were still far enough out there to man the battle stations.  The attack on Pearl in 1941 would have turned out a lot differently had the Yankees been given one hour notice.


Scanning for drones is a different task which needs different tools.  We can do that.  I hope we do.






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