[Ides of March]

Get ready for the return to GPS "Selective Availability".

[RinaseaofDs]

The thing about GPS guided drones is that it is pretty simple to build such a thing.

The vulnerability of GPS in the past was in the accuracy, and so they offered to flavors, one to the military accurate to within 5m, and the other to civiians which would be accurate to within 20m.

Those were the days when people thought you'd use GPS to guide in some sort of missle.

With chem/bio weapons, how accurate do you have to be? Coding a chip to fly a pattern of GPS waypoints and then instaling it in some sort of automated control system is literally a bachelor program project in electrical engineering, third year. We did something very similar with sailboats.

Tougher is finding a UAV with a payload big enough to handle both the fuel and the agent here in the US. Even putting something like that together, you'd have to test it somehow before you use it. This is desperation on SH's part.

Even a Loran C based system would be accurate enough for something like this.

[narby]

Get ready for the return to GPS "Selective Availability".

SA only puts a 100 foot or so "noise" on the location (while commercial "differential" broadcasters can "fix" it to within 3 feet). Who cares if they miss their target by 100 ft with Anthrax.