16.5.17

MORE POWER TO THE DEFLECTOR SHIELD, MR CHEKHOV.

The British are deploying one.  No, this is not some Nikola Tesla fantasy, being worked on by the boffins of Bletchley Park with the encouragement of Winston Churchill.  It's a way of keeping contraband out of prison yards.
The device creates a 2,000ft (600m) shield around and above a prison that will detect and deflect the remote-controlled devices.

It uses a series of "disruptors", which are sensors to jam the drone's computer, and block its frequency and control protocols. The operator's screen will go black and the drone will be bounced back to where it came from.
The first trial of the deflectors will be on Guernsey, but there is no evidence that it's based on secret German research notes from the Occupation. (The Channel Islands garrisons had a front row seat for OVERLORD but they were incapable of doing much more than radioing reports that it wasn't going so well for their Kameraden.)
Nottingham-based company Drone Defence has worked on the idea in the past year.

Founder and CEO Richard Gill said: "It disrupts the control network between the flyer and the drone. The drone then activates return to home mode and it will then fly back to the position where it had signal with its flyer.

"Someone described it as the final piece in a prison's security puzzle. I think it could have a significant worldwide impact."

Mr Gill said the technology is perfectly safe and does not "hack" or damage the drones. It is relatively cheap to install and, depending on the size of the prison, costs range from £100,000 to £250,000.
The things you learn ... there's a return-home circuit, apparently to prevent the loss of an expensive toy in the event of more mundane signal failures.  I wonder if there's a way to apply this circuitry to digital command control, in order to forestall collisions of model trains.  Think of it as simulating positive train control by setting up bubbles of protection around each train.

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