[FOSS-GPS] PPP with RTKLib: RINEX O- and N- files?

Anders Wallin anders.e.e.wallin at gmail.com
Fri Dec 20 01:50:03 PST 2013

Thanks, I am now trying to run RTKPOST with these inputs:
my own rinex 2.11 Observation file
igsXXX.clk  file
igsXXX.sp3  file
brdcXXX.13n file

In the Options I am selecting PPP Static (which according to the manual
should be Q=7)
But when I run the program I get a Q=6 (ppp-kinematic) output file. Is that

Any ideas why this is happening?

I am using RTKPOST ver.2.4.2 b11
In the Options/Settings1 tab I have:
PPP Static
L1+2 Combined
Elev. mask 5 degreens
dynamics /tides: OFF / OFF
Iono: Broadcast
Tropo: Saastamoinen
Eph/clk: Precise
nothing checked on the first row
second row: GPS checked.

I am trying to compare my solution against web-pased PPP services at CSRS
and JPL:

these web-based PPP calculations give similar results, but I am not able to
reproduce the data with RTKLib.
For example the clock error plots are much smoother with CSRS-PPP and APPS,
while the RTKLib output is very noisy.
Does anyone know how to reproduce the results of these web-based services
with RTKLib?

Thankful for any further ideas/suggestions!


On Thu, Dec 19, 2013 at 10:11 PM, Felipe G. Nievinski <fgnievinski at gmail.com
> wrote:

> just use the daily global combined broadcast ephemerides made available by
> the IGS, e.g.:
> <ftp://cddis.gsfc.nasa.gov/gps/data/daily/2002/175/02n/brdc1750.02n.Z>
> for 24 June 2002; calculate your day-of-year here:
> <http://sopac.ucsd.edu/scripts/convertDate.cgi>
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