[time-nuts] The Demise of LORAN (was Re: Reference oscillatoraccuracy)
Magnus Danielson
magnus at rubidium.dyndns.org
Sun Nov 15 20:48:41 UTC 2009
Didier Juges wrote:
> Enough for what? To bug the heck out of a citizen suddenly unable to find his way to the movie theater?
>
> Weapon systems and aircraft navigation are unlikely to be affected by such a simple device on the ground, even if deployed in large quantity. Most of the stuff that really needs GPS has decent antennas that look up, not down.
They are affected, it is well covered, but the difference is the
distance from the jammer until affected. It's a fairly well-understood
problem and the difference between civilian and military receivers lies
in signals, keying for access, bootstrapping and testing and
counter-measures such as IMU.
Cheers,
Magnus
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