[time-nuts] GPS PRN vs SV...??
Tom Van Baak
tvb at LeapSecond.com
Sat Feb 9 02:32:30 EST 2008
> Current status SVNs, PRN etc at:
>
> http://www.navcen.uscg.gov/navinfo/Gps/ActiveNanu.aspx
>
> Bruce
That's a good URL. Thanks.
More on the SVN vs. PRN issue...
When I mistrust a GPS receiver and want to check where a
satellite really is, I use the NASA satellite tracker:
http://science.nasa.gov/Realtime/jtrack/3d/JTrack3D.html
If any of you haven't heard of, or used this java applet yet,
I highly recommend it. After you click on +J-TRACK 3D,
click on Satellite->Select and pick any GPS satellite.
The only trouble: our SV of interest, GPS BIIA-10 (PRN 32),
is missing from the list (perhaps because it is still marked
unhealthy?), so we can't get its orbit or ground track. I sent
a note to NASA and we'll see if they fix it.
If any of you know of another satellite tracking web site that
shows SVN23/PRN32, let us know, ok?
By the way, if one takes a screen capture of each GPS SV
in the Jtrack3D list, you get this cute GPS orbit animation:
http://www.leapsecond.com/pages/gps-orbit/
/tvb
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