GPS - Re: GPS Satellites in view (green) based on the location of your

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Re: GPS Satellites in view (green) based on the location of your

Sam Wormley

2007-07-17, 10:33 pm

dold@91.usenet.us.com wrote:
> In sci.geo.satellite-nav Sam Wormley <swormley1@mchsi.com> wrote:
>
> Why would you say that is based on my ISP?
> It looks like a worldwide map for me, and I don't see any indication that
> it is supposed to be anything else.
> http://www.nstb.tc.faa.gov
>

The green sats are visible the hemisphere centered on my location...
The blue outside my visibility. How about you?

-Sam

Sam Wormley

2007-07-18, 4:33 am

dold@91.usenet.us.com wrote:
> In sci.geo.satellite-nav Sam Wormley <swormley1@mchsi.com> wrote:
>
>
> I see some as green, some as blue, but I also see a few yellow ones. I
> would say they are color coded to correspond to the keys at the bottom of
> the screen, not the location of one's ISP. The green are certainly not all
> visible to me.
>
> Those look like Precision Approach, Non-Precision Approach, Do Not Use, and
> Not Monitored.
>
> Watching the video, you can see the satellites change color as they wander
> the earth.

PA = Precision approach (fully corrected)
NPA = Non-precision approach (corrected but not for ionospheric signal delays)
DNU = Do Not Use

And since I'm located roughly close to the CONUS center, I should see
many of the PA= Precision approach (fully corrected) Satellites.

Thanks

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