[OSM-newbies] WAAS EGNOS MSAS SBAS (was New Garmin questions)

[Jeffrey Martin]

The wikipedia article says that MSAS is a SBAS like WAAS or EGNOS, but then
it says
it's differential GPS. Is SBAS similar enough that I should leave WAAS
enabled?

I suppose I can just try it with the option on and off and see what happens.
I'm in South Korea right now.

-Jeff

On 8/10/07, Nick Black <nickblack1 at gmail.com> wrote:
>
> On 8/10/07, Jeffrey Martin <dogshed at gmail.com> wrote:
> > I thought I read somewhere that sometimes using WAAS
> > can actually decrease accuracy when the service is marginal.
>
>
> WAAS is a correction service that only applies to North America.  If
> you use WAAS outside of the area that its intended for it may lower
> the accuracy of the unit, becuase it will be applying corrections for
> the wrong area.
>
> EGNOS (http://en.wikipedia.org/wiki/Egnos) is the EU version of WAAS -
> so far as I know, if you enable WAAS on a Garmin unit in Europe, it
> will use EGNOS - which will definitely enhance the accuracy of the
> unit.
>
> So in conclusion - use WAAS/EGNOS in Europe and America.
>
> There's some quite useful informaiton on the ESA site:
>
> http://www.egnos-pro.esa.int/education/index.html
>
> >
> > What happens if I set the track option to auto and most points?
> >
> >
> >  On 8/10/07, Christoph Eckert <ce at christeck.de> wrote:
> > > Hi Martin,
> > >
> > > > Do I want WAAS on or off?
> > >
> > > if you have good luck, enabling it leads to better precision.
> > >
> > > > I think the wiki said to set the track to time
> > > > interval. Why not distance?
> > >
> > > If set to distance, you'll get less trackpoints at high speeds. 1/sec
> > > usually gives you the most trackpoints the device is capable of
> > > generating.
> > >
> > > > If I set the track to store to the microSD card
> > > > then should I have wrap when full or or off?
> > >
> > > It depends, but in most cases you want to have the most recent
> > > trackpoints.
> > >
> > > > When it wraps does it wrap the data on the SD card also?
> > >
> > > No. The SD will always contain all trackpoints collected. The option
> > > only affects the internal memory.
> > >
> > > > Which way is the best way to set the altimeter?
> > > > Can I find a highway sign with the altitude and set it by hand?
> > >
> > > Sorry, I have no experience here.
> > >
> > > HTH & best regards,
> > >
> > > ce
> > >
> > >
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> >
> >
> >
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>
> --
> Nick Black
> --------------------------------
> http://www.blacksworld.net
>
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