Re: GPS Accuracy
Jerome J Phillips (hicap9@JUNO.COM)
Wed, 15 Jul 1998 23:30:49 -0400
>Can anyone tell me what the positional accuracy of hand-held GPS
>(the kind suitable for hiking) is (+/- 10 meters, 100 meters, etc) for
>finding features on a standard topo?
My understanding of GPS systems is limited. However many friends of mine
have used both military and civilian versions.
The military systems are based on triangulating a position utilizing ten
sattelites for reference points. Whereas they have limited the civilian
market down to utilizing three sattelites. A military GPS will give you
a reading within 10 square meters of your position, while the civilian
version will give you a reading within 100 square meters.
However, if you are really good you can use a topo map and get a reading
within one square meter of your position. Quite a few people I know who
like to backpack etc. trust using a topo map over a GPS.
To each his own I guess. I know that for me personally a good topo map
and a good lensatic compass are what I prefer. But then again I learned
my land nav skills at Bragg and Benning
If you feel more comfortable with a GPS then have at it. Caveat Emptor
The Grand Procrastinator
Hi Dave & Genni
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