[time-nuts] OT - GPS and North

Robert Darlington rdarlington at gmail.com
Sat Nov 21 14:30:48 UTC 2009


It depends on the GPS receiver.  The GPS chipset won't know (it knows where
it is and can remember where it was to know what direction it's moving), but
some consumer GPS receivers (Garmin, Magellan) have electronic compasses
built in.  My Garmin eTrex Legend does NOT have a compass built in, but
taking about 2 steps in any direction will tell me which way I'm moving.  It
can't do this when stationary.  My buddy's eTrex can point north without
moving, but that feature drains the battery faster.

-Bob

On Sat, Nov 21, 2009 at 7:05 AM, iovane at inwind.it <iovane at inwind.it> wrote:

> Does a stationary (not in motion) GPS receiver know where the North is?
>
> As far
> as I can understand, it doesn't, isn't it?
>
> Antonio I8IOV
>
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