[teqc] Re: editing data in a GPS file

Lou Estey lou at unavco.org
Fri Nov 14 07:50:06 MST 2008


Jonathan Allan wrote:
> Subject: editing data in a GPS file
> From: "Jonathan Allan" <jonathan.allan at dogami.state.or.us>
> Date: Fri, 14 Nov 2008 05:24:49 -0800
> To: <teqc at ls.unavco.org>

> I recently submitted a GPS file to the NGS OPUS website for post processing.
> However, I soon received an error message back indicating the following...
>  
> The RINEX data submitted to OPUS contains data taken from more than one 
>  1014   location.  This can be verified by opening up your RINEX file and
>  1014   searching for "MARKER".  OPUS will only process data taken from one
>  1014   location.  Try separating the data into individual files and then 
>  1014   re-submit the data
>  1014   Aborting...
>  
> Could someone comment on the best way to edit the rinex file?
> I have tried editing the rinex file using a text editor and then
> resubmitted the data but I am now experiencing format errors or
> time issues.  Should I be using teqc to do this?
>  
> Thanks
> Jon
> 
> ------------------------------------------------------------------------------------------
> 
> Jonathan Allan, Ph.D
> Coastal Geomorphologist and Coastal Section Leader 
> Oregon Dept. of Geology & Mineral Industries, Coastal Field Office
> P.O. Box 1033,
> Newport, OR97365
>  
> Ph: 541-574-6658
> Email: jonathan.allan at dogami.state.or.us
> http://www.oregongeology.org/sub/FIELDOFFICES/jonathanallan.htm
> http://www.oregongeology.org/sub/Nanoos1/index.htm

Maybe the first thing to do is see if you agree with the OPUS software.
Is the RINEX file for two or more points?  If not, then there is some
other problem.

If it is for two or more, teqc could be used to split it up, but you
would have to know the time periods that the antenna was at each point,
and then edit the original file by time windowing:

http://facility.unavco.org/software/teqc/tutorial.html#sec_13

and probably additionally use the -O.mo and -O.mn options for each time
splice to make sure that the marker name and number are correct for
that period of time.

In case of continuing problems with OPUS, though, the best thing to
do is contact OPUS support at ngs.opus at noaa.gov

Hope this helps.

cheers,
--lou

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Louis H. Estey, Ph.D.              office:  [+001] 303-381-7456
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"If the universe is the answer, what is the question?"
                                                -- Leon Lederman
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