[Az-Geocaching] How accurate is the GPS?

[Trisha]

Wow, Brian! What a cool graphic!

Someone should hire you to do, um.... ya know, technical thingys...

:-)

Trisha "Lightning"
Prescott


On Fri, 04 Jun 2004 12:09:31 -0700, Brian Cluff wrote:

> 
> Jim Krider wrote:
> > Another test at ASU I stood on a manhole cover and made a waypoint.
> > Without moving I then set a go to for that way point which said it
> was
> > 8ft away.  Not bad.  But then without moving the numbers increased
> > further and further until it reached 57 feet.
> > 
> > When hunting for geocaches I was assuming I was within 3 m (about
10
> > feet).  I can see now it could be up to 60 ft away from the spot.
> 
> It also depends on the terrain.  You'll have a real good time
finding 
> caches in the bottom of caverns when the signal starts bouncing off
> the 
> walls and is generally weak.  It gets especially fun when the cache
is 
> on the side of a steep hill.  Most people think to look for 20 feet
or 
> so in all directions.  In reality the accuracy distance is a circle 
> projected straight down, so you actually have to search much father
up 
> and down the hill than you have to from side to side.
> 
> I whipped up a visual aid.  The blue represents what most people
think 
> to look in (20 feet in all directions).  The red is where you
actually 
> need to look.
> 
> Brian Cluff
> Team Snaptek