Re:What can defend against off-the-shelf drone weapons?
by jarfil on Tuesday August 07, 2018 @03:46PM
(#17709957)
An accelerometer and gyroscope may not make for a precise dead reckoning system, but if all you need is to get into a 1m blast radius, they might be good enough. Pair that with a smartphone with face/feature detection like those used for AR, and you might be able to navigate pretty much anywhere, no need for GPS.
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Re:What can defend against off-the-shelf drone weapons?
by web007 on Tuesday August 07, 2018 @05:12PM
(#17710854)
IIRC exactly this was the basis of removing selective availability on GPS signals for civilian use. The original GPS spec had two bands / channels / something: one that was encrypted, for military use, and a "fuzzy" version for civilians that would vary ±100 meters in accuracy.
Once inertial guidance for missiles became more accurate than ±100 meters, there wasn't a point to reducing the civilian accuracy anymore, so they disabled SA in 2000 and went all-in on availability in 2007.
Re:What can defend against off-the-shelf drone weapons?
by WalterBright on Tuesday August 07, 2018 @05:14PM
(#17710869)
The V2 guidance system was an integrating accelerometer and a gyroscope. They could barely hit a target the size of London. The lack of accurate guidance made it a militarily ineffective weapon.
Re:What can defend against off-the-shelf drone weapons?
by facing_worlds on Tuesday August 07, 2018 @07:19PM
(#17711811)
To be fair the V2 rockets never hit anything useful prinarily because the British had turned every german spy and were feeding them false information about the results of the attacks.
Re:What can defend against off-the-shelf drone weapons?
by WalterBright on Tuesday August 07, 2018 @07:51PM
(#17712003)
The rocket guidance system was not capable of hitting something more precise than "London", and of course the British tried to stop even that from happening.