I was unaware of the GPS difficulties,
Even without GPS inaccuracies at those latitudes; extraordinary measures need to be taken in the polar regions anyway.
The same Law of Cosines Spherical Geometry that work just fine for larger distances over most of the Earth's surface are entirely inadequate in polar regions.
For more details, see the GIS FAQ.
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
In reply to Re^6: Perl and Solving Trig/Converting GPS to x,y Cords