[FOSS-GPS] rtklib kinematic Stop Go post-processing with rnx2rtkp

Felipe G. Nievinski fgnievinski at gmail.com
Tue Apr 21 15:48:45 PDT 2015

I like your idea of using the 1PPS output to sync an external event
logger.  Please keep us posted if you make progress in the stop-and-go
hardware part, perhaps better at the NavSpark forum:
I might be able to help with the software part if necessary, especially the
matrix/vector weighted averaging code.
All the best,

Date: Mon, 20 Apr 2015 17:14:28 -0700
> From: julio menezes <yjmenezes at yahoo.com.br>
> To: Open Source GPS-related discussion and support
>         <foss-gps at lists.osgeo.org>
> Subject: Re: [FOSS-GPS] rtklib kinematic Stop Go post-processing with
>         rnx2rtkp
> Message-ID:
>         <1429575268.54261.YahooMailBasic at web140303.mail.bf1.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
> Dear Dr. Felipe  Nievinski,
> <<<<
> --------------------------------------------
> Em seg, 20/4/15, Felipe G. Nievinski <fgnievinski at gmail.com> escreveu:
>  Assunto: [FOSS-GPS] rtklib kinematic Stop Go post-processing with rnx2rtkp
>  Para: foss-gps at lists.osgeo.org
>  Data: Segunda-feira, 20 de Abril de 2015, 1:58
>  Let me resurrect
>  this old thread.
>  The processing could be done in kinematic mode
>  (either forward-only or forward+backward combined).? That
>  way, initialization tricks (antenna-swap, fixed-length bar)
>  as well as ambiguity reinitialization (cycle slips) are less
>  of an issue.?
>  Then stop-and-go could be implemented forming
>  weighted averages of the kinematic position coordinates and
>  precision (3-by-1 vectors and 3-by-3 matrices).
>  It'd require a time table of occupation
>  start and end times (and marker name), which could be
>  obtained simply grepping the rover RINEX observation file to
>  extract event flags.
>  If I were to implement this, I'd be easier
>  for me to do it Octave rather than built into RTKLIB's C
>  code.
>  -Felipe.
>  PS: the non-integer epoch seconds can be handled
>  by teqc, see, e.g.:<
> http://postal.unavco.org/pipermail/teqc/2012/001310.html>
> >>>>>
> Thank you for your explanation.
> I agree, instead build inside rtklib C code, i am using GNU utils ( grep,
> awk,sed, octave,... ).
> I plan to use 1PPS signal to sync trigger events. ( closed loop ) and will
> write my own occupation time table logger  (gps time sync and epoch
> count... ).
> best regards,
> julio menezes
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