To: Just4Him; CodeToad; Squantos; hiredhand; Myrddin
I thought our frequency-hopping algorithms made jamming our drones impossible?
3 posted on
12/12/2011 6:37:05 AM PST by
Travis McGee
(www.EnemiesForeignAndDomestic.com)
To: Travis McGee
Plus, these things MUST have a “go home” function if communication is lost.
4 posted on
12/12/2011 6:42:01 AM PST by
super7man
To: Travis McGee
"Bolton said Congress ought to be concerned
if the Iranians.."
And the Queen said: If I had testicles, I could be King.
Goddam sensationalist reporting.
20 posted on
12/12/2011 7:16:46 AM PST by
verity
(The Obama Administration is a Criminal Enterprise.)
To: Travis McGee
I thought our frequency-hopping algorithms made jamming our drones impossible?
They make it hard to take control of the drone, but not jamming. You just jam the entire section of the spectrum where the transmitter operates. Simple in theory, hard in practice. You need to know how wide a band to jam. And you need some serious gear to do that but then that is what the Russians were selling them. Finally you tend to blind any of you own equipment operating in that range.
I have always been a big fan of the cheap drone. Think V-1 buzz bomb with a camera instead of a warhead. Have an assembly line crank them out by the thousands. Sure they will probably shoot down five out of six. But they are shooting million dollar a pop SAMs at you $200,000 a copy drones. You force them to wage economic warfare against themselves. And when you lose a drone no big deal.
21 posted on
12/12/2011 7:25:19 AM PST by
GonzoGOP
(There are millions of paranoid people in the world and they are all out to get me.)
To: Travis McGee
US ambassadors don’t have clearance for such knowledge, so I highly doubt his guessing is accurate.
25 posted on
12/12/2011 7:42:13 AM PST by
CodeToad
(Islam needs to be banned in the US and treated as a criminal enterprise.)
To: Travis McGee
The frequency hopping or CDMA approach is resistant to jamming on a single frequency. You jam that kind of signal with a frequency hopper or CDMA. The technology to receive the signal is common as dirt. CDMA cellphones are a common example. In theory, the PN sequence we use should be hard to follow. The GPS version repeats on a 2 week cycle, but you can "join" that cycle by using the encrypted channel to get info on where the PN cycle is currently functioning. The jamming exercise is simply a denial of service attack using a technique that whacks enough receiver samples to prevent complete reception of a digital data packet. You don't even have to hit 100%. Just keep the reception disrupted.
30 posted on
12/12/2011 8:07:20 AM PST by
Myrddin
To: Travis McGee
If they are Jamming GPS signal from Sats,then you not using Freq-Hoping. Also, Frequency Hopping makes it harder to Jam,not impossible you just have to Jam much wider channel. Also,where is guarantee that the Drone was using it, instead something much simpler,because its cheap.
39 posted on
12/12/2011 9:12:28 AM PST by
alex2011
To: Travis McGee
I thought our frequency-hopping algorithms made jamming our drones impossible? Something is impossible right up until the time that someone does it. Then it's no longer impossible.
65 posted on
12/19/2011 10:43:22 AM PST by
Lurker
(The avalanche has begun. The pebbles no longer have a vote.)
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