Next message: Mike Brasler: "Re: lv-ab: Error in altitude was Re: Heading info from GPS"
I have noticed that with my Garmin etrex too -- 212
feet at sea level, or sometimes below sea level.
I suspect it ha something to do with the fact that the
logitudinal distance between satellites is a LOT more
than the altitudinal distance. Maybe?
Dick
--- "Rosalie B." <> wrote:
> On Thu, 13 Oct 2005 15:37:00 +0000, you wrote:
> I've never been able to get our GPS to read altitude
> at all reliably,
> even when I've followed the directions and I've
> stopped trying. It
> either says we are at 200 feet or that we are
> underwater. Is this at
> all important?
>
> >What is the radius of error on each of the two
> GPS's, and what error of
> >angle could that induce if the error was max+ on
> the bow GPS and max- on the
> >stern GPS with the distance between them at 50
> feet? or are we settting
> >up a supertanker?
> >> >
> >>Actually you could take the coordinates from the
> GPS forward and manually
> >>enter them as a waypoint in the aft GPS and it
> would then calculate the
> >>heading from the stern to the bow using that
> waypoint.
> >>
>
> grandma Rosalie
>
>
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