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Weather Balloon Mounted GPS Jammer

A Grid of GPS Jammers mounted to weather balloons and released
  [vote for,

For the small poor country that can not afford proper defense from cruise missles and gps guided smart bombs, we have the inexpensive balloon mounted GPS jammer. These devices will transmit on both 1575.42 MHz and 1227.6 MHz. To even further assure jamming, it could also have a built in repeater for 1227.7 and 1575.42 MHZ that re-transmits the exact encrypted signal from the orignal DOD and Civilian GPS satelites. These balloons could be released by the hundreds over any country in order to jam aircraft, ground and sea navigation, which would most likely not kill anyone, but would be a non violent way that an angry terrorist could attack a country.

The link that I provided is for a simple Noise GPS jammer. I would think that using a simple RF repeater for 1227.6 and 1575.42 MHZ that recieves and repeats the signal from the satelite would be more effective. each balloon would transmit the signal from a different GPS sat with balloons in sync with each other.

NOTE: I am against terrorism of any kind. This is only an idea and does not include any detailed plans to create such a device. The link that I provide is for a simply garden varity noise GPS jammer for the non-mil civil gps system.

dlapham, Aug 26 2004

GPS Jammer Instructions http://www.phrack.o...ue=60&id=13#article
These are for a basic 1575.42 MHZ Jammer, My idea mounts it on baloons and adds 1227.6 MHZ jamming and repeating. [dlapham, Oct 17 2004, last modified Dec 13 2011]

How GPS works http://www.trimble.com/gps/howgps.shtml
Here is a description of how GPS works [dlapham, Oct 17 2004, last modified Dec 13 2011]

Inertial Guidance http://www2.worldbo...av17.htm&direct=yes
"Unlike other methods of navigation, inertial guidance does not rely on observations of land or the stars, on radio or radar signals, or on any other information from outside the vehicle." [Klaatu, Oct 17 2004]

Military (M-Code) http://www.mitre.or...w/betz_overview.pdf
Information on the "jam resistant" military GPS code. [dlapham, Dec 13 2011]


       The bombers would merely use other techniques such as laser-guided radar-guided or conventional (unguided) bombs wouldn't they? It almost certainly won't stop them bombing! If you were a civilian I presume the last thing you would want is for the bombs falling around you to be even more inaccurate than usual so this would not be popular with the civilian population.   

       Disrupting GPS would have various knock-on consequences given the huge number of non-military devices that rely on it. [-]
dobtabulous, Aug 27 2004

       It could cause a slow down in coordination of ground force movements though. If you were a civilian and did not want your country to be overrun by an invading force, you likely would be willing to accept the bombs missing the military targets.
Zimmy, Aug 27 2004

       //a non violent way that an angry terrorist could attack a country// in which case, he doesn't very well fit the definition of a terrorist, right?
lurch, Aug 27 2004

       An annoyancist? I'd like to meet a joyist.
harderthanjesus, Aug 27 2004

       Simple homing devices could take out these jamming devices rather readily. Seems like a waste of time from a tactics point of view.
zigness, Aug 27 2004

       [zig] - I was going to bone this for the same reason. But then I thought about a $20 jammer taking out a $100,000 HARM missile. Annoying *and* cost-effective.
lurch, Aug 27 2004

       How would this impact missles with inertial guidance? <link>
"In time of war, enemies cannot "jam" an inertial guidance navigation system with false or confusing information."
Klaatu, Aug 27 2004

       I am wondering if Iran used something like this to bring down the RQ-170.
dlapham, Dec 13 2011

       They are now claiming they did.
lurch, Dec 15 2011


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