[time-nuts] Story in the Economist about GPS jamming

[Chris Albertson]

It is easy to jam a simple GPS receiver.   Harder to jam a military
receiver.  In a conflict a jammer of any kind is pretty much a beacon that
says "here I am".  It is one of the bigger problems of jamming, you have to
radiate RF.   So either you have to be very close to your target or have a
powerful jammer.

Simple civilian jammers are easy, like the one a truck driver might use to
prevent his boss from tracking him, It only has to cover a few feet.    But
try and jam a jet flying at 40,000 feet or a navel carrier task force.


On Tue, Jul 30, 2013 at 5:50 AM, Scott McGrath <scmcgrath at gmail.com> wrote:

> Any competent engineer could have told the powers that be that a satellite
> system based in LEO has a relatively high risk profile from the
> Universe/hostile activity/spoofing and jamming
>
> Yes GPS is/was oversold.
>
> Trouble is Clarkes law applies here (any sufficiently advanced technology
> is indistinguishable from magic).  And this applies double to the
> technological illiterates in DC
>
> See Sen 'Tubes' Stevens for the canonical example
>
> Sent from my iPhone
>
> On Jul 29, 2013, at 12:46 PM, "J. Forster" <jfor at quikus.com> wrote:
>
> > It seems to me that GPS has been oversold as the be all, end all system
> > that made all other systems obsolete and GPS has become all but an
> > indespensible utility.
> >
> > Reports like this, could well be used to promote a backup, like LORAN or
> > eLORAN, just as public buildings have backup generators.
> >
> > YMMV,
> >
> > -John
> >
> > ==================
> >
> >
> >>
> >>
> http://www.economist.com/news/international/21582288-satellite-positioning-data-are-vitalbut-signal-surprisingly-easy-disrupt-out?fsrc=scn/tw/te/pe/outofsight
> >>
> >>                                -Bill
> >>
> >>
> >>
> >>
> >>
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-- 

Chris Albertson
Redondo Beach, California