In article ,
Richard Casady wrote:
On Mon, 19 Jul 2010 01:42:33 GMT, (patric albutat)
wrote:
So how exactly are we going to create superior charts in regions with
no GPS coverage? Or what use would these charts be to a sailor trying
to navigate a tricky coast without sat nav to give him his position?
Just where are these areas without coverage? Hint: the G in GPS stands
for Global. It's like taxes: everywhere.
Casady
Just about ANY Military Nuclear Site in the USA. Most of the FEMA
Bunkers. Most of the SAC Bases have that capability, but only test it
unless at DefCon 2 or higher. White House & Capitol Building, depending
on the immediate Threat Level. Places like that here in this country.
Overseas, Many of the National Parliament buildings, and Presidential
Palaces, and major Military installations, and places like that. Global
means Global Coverage from the Sky, not global coverage on the Ground
when local Jammers are active. This isn't Rocket Science, and many
Militaries around the world can, and do Jam the Civilian Datastreams,
within their boarders. The P-Code & Military Datastreams, are a lot more
resistant to such Jamming.
--
Bruce in alaska
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