GPS Anti-Jamming

by GadgetManiac on July 27, 2004

Last month, as part of operation Northern Edge, the U.S. military set up some GPS jamming equipment in Alaska, in order to test the efficacy of some new anti-jamming equipment. The motivation for such a test is, of course, is that militants and others can easily jam or interfere with such weak signals, therby rendering GPS equipment inoperative.

Last month, Phrack magazine published a detailed guide to building a low-cost, portable GPS jammer out of components that can be easily obtained from electronics supply houses.

Not that you would ever want one for your car, but Raytheon has developed a family of low-cost anti-jam adaptive antenna systems to protect receivers from simultaneous, multiple jamming sources.

Raytheon PAGAN Anti-jam GPS System

The Raytheon Pagan anti-jam devices represent an interesting use of beamforming. The receiver identifies each interfering source, and forms a null beam towards the source, effectively ignoring it.

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{ 4 comments… read them below or add one }

shafqat February 28, 2005 at 9:41 AM

President Bush has recently announced that GPS signals may be <br />
denied in any area. Can you comment, if this means that GPS <br />
signals will be switched off OR encrypted etc.<br />
Secondly, Is it possible to get GPS signal using some of the <br />
Anti GPS jamming devices, as mentioned by you.<br />
It appears to be an interesting scenario.<br />
regards shafqat<br />
Se

Reply

szelectron August 25, 2007 at 11:41 AM
TopDog September 7, 2011 at 2:21 PM

Not to sound alarmist, but there may be instances someday when people will want anti-jamming technologies for their cars.

Reply

TeamTimmy September 16, 2011 at 7:31 AM

Sure, hackers might try to attack your car by jamming your GPS. I don’t think that’s a far-fetched scenario.

Reply

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