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.
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.
Related posts:
{ 4 comments… read them below or add one }
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
jam it at all
http://www.szelectron.com
msg@szelectron.com
Not to sound alarmist, but there may be instances someday when people will want anti-jamming technologies for their cars.
Sure, hackers might try to attack your car by jamming your GPS. I don’t think that’s a far-fetched scenario.