[teqc] Azimuth and elevation calculations ...

Lou Estey lou at unavco.org
Tue Oct 5 07:13:02 MDT 2010

Dear Oskar,

> I am using teqc for quality check of my RINEX files. One of these
> quality parameters is also sky plot, to se in detail obstacles in
> surroundings of gnss antenna.
> But resulted azimuth and elevation files present all possible
> observations and not true observations. Is there any switch that result
> in real azimuth and elevation files?

No, there isn't.

> And another issue that's been bothering me is calculated antenna
> position. In all calculations discrepancies are more than 200 m. Is that
> normal as receivers compute position
> on a basis of same observations and navigation message?

The qc algorithm doesn't need accurate point-pointing, so it was not
done.  Back when it was developed, selective availability was in use
and the position accuracy was about the same as one would obtain from
a single-frequency receiver.


Louis H. Estey, Ph.D.              office:  [+001] 303-381-7456
UNAVCO, 6350 Nautilus Drive           FAX:  [+001] 303-381-7451
Boulder, CO  80301-5554            e-mail:  lou  unavco.org
    WWW:  http://www.unavco.org   http://jules.unavco.org

"If the universe is the answer, what is the question?"
                                                -- Leon Lederman

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