Re: [Paddlewise] GPS and Selective Availability

Thanks John,

I flipped on my Garmin 12 this morning just to see what was happening and it
seems to take me _very_ close to my known position on a topo, closer than it
ever did.  Yea!  But I've I also noticed that my EPE (Estimated Position Error)
figs were much lower than I've ever seen them, sometimes around 20 feet.  I'm a
little confused.  My antenae and receiver doesn't display PDOP figs (lowest
Position Dilution of Precision) and my understanding is that even with SA
terminated, my EPE doesn't deal with DOP, but only satellite quantity and
geometry.  But, after monitoring it for several hours until I ran the batteries
down, the EPE seemed to read in the really lower numbers.  Just a bit of
coincidence?

Also, John or anyone else, if an EPE reads 20 feet, wouldn't that be from a
theoretical fixed point and the real estimated error be a 40 ft. diameter?

-Nick




***************************************************************************
PaddleWise Paddling Mailing List - All postings copyright the author and not
to be reproduced outside PaddleWise without author's permission
Submissions:     paddlewise_at_lists.intelenet.net
Subscriptions:   paddlewise-request_at_lists.intelenet.net
Website:         http://www.paddlewise.net/
***************************************************************************