On Thursday 12 July 2007 14:45:36 john lewis wrote:
> On Thu, 12 Jul 2007 14:29:25 +0100
>
> Tony Smith <tony.smith@???> wrote:
> > > You can then specify coordinates within those squares using
> > > eastings and northings to the required accuracy: so SU424155 is
> > > the entrance to the Zepler building where we have meetings, to
> > > 100m accuracy.
No I didn't!!
Anyway, anyone who relies on one method of position location whilst on the
hills deserves to walk over a cliff. Never forget your traditional map and
compass work.
My receiver will give a 10 digit grid reference which is beyond the
theoretical accuracy of the system!
Some interesting articles on GPS failure....
http://www.newscientisttech.com/article/dn10189-solar-flares-will-disrupt-gps-in-2011.html
http://www.gpsworld.com/gpsworld/article/articleDetail.jsp?id=43404
>
> If anyone is out walking the hills in white-out conditions then 100m
> accuracy is just not good enough.
>
> Even 10m would give enough error to allow you to walk over a cliff if
> you could not pinpoint your location on a map precisely.
>
> --
> John Lewis
> Debian (Sid) with the GeneWeb genealogy package
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