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?


http://waas.stanford.edu/~wwu/papers...itch_stu95.pdf

http://waas.stanford.edu/~wwu/papers...F/SeoIES08.pdf

http://www.agu.org/pubs/crossref/200...RS003066.shtml

http://www.fly-low.com/features02/gpsdenial.html

https://www.fbo.gov/index?s=opportun...f11c050aeb be
7682bc9ba408a&tab=core&_cview=1

http://www.aviationkb.com/Uwe/Forum....Interference-T
esting-711-reporting

Note that the published radius of jamming by the USG is 180 - 400 nm
(reported for both Maryland and China Lake) something that Wayne refuses
to acknowledge as he repeats that jamming isn't possible over a large
area.

Presumably the NOTAMS stating that jamming was occuring over a wide area
of sea off Cornwall previously posted doesn't mean anything to Wayne
because it's happening somewhere foreign.

Hint: the G in GPS stands for Global. It's like taxes: everywhere.

Then there's the World Series ... so that according to you involves
everyone in the world? It doesn't even involve a significant fraction of
the world's nations. Does Universal Studios involve the entire Universe?