[time-nuts] GPS altitude somewhat wrong?

Gary E. Miller gem at rellim.com
Thu Jun 9 17:23:46 UTC 2016


Yo Mark!

On Thu, 9 Jun 2016 16:56:12 +0000
Mark Sims <holrum at hotmail.com> wrote:

> You have to be careful with a lot of modern GPS receivers.   Many
> implement some sort of "position pinning".   If they do not detect
> significant movement,  they either stop updating the coordinates  or
> heavily filter it...  you do not see the actual computed location.
> On some receivers you have to move well over 10 meters before the
> position un-pins. ----------------------
> > CEP(95) of 1.5 meters over 1,000 seconds.


Yes, but this model Skytraq is designed for survey work.  So that mode
is selectable.

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at rellim.com  Tel:+1 541 382 8588
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