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

[julio menezes]

Anders Wallin,
I tested here and really rnx2rtkp do not process PPP without a nav file.
I do not know why as i supply sp3  precise orbits.

about ION, GPS users with single-frequency receivers need ionospheric electron content.
if useful, you can get it here:
#IGR_TEC 
 ftp://cddis.gsfc.nasa.gov/gps/products/ionex/

Nav can be taken from here, if needed, not your case:
ftp://cddis.gsfc.nasa.gov/pub/gps/data/hourly/

regards,

julio menezes





Em Quinta-feira, 19 de Dezembro de 2013 6:03, Anders Wallin <anders.e.e.wallin at gmail.com> escreveu:
 


<< Does this have something to do with the PPP mode kinematic/static/fixed?
><< Is there a way to tell RTKPOST that my receiver is fixed, no Nav data is required, 
>
><< and it processes just the Observation data?
>
>For post-process PPP, i think you will need precise  SP3‐c precise orbits (sp3 ) , clock and ion ( *I ).
>As your receiver is not moving,  PPP-static and  other options.
>For GNU/Linux CUI  rnx2rtkp there are only 6:ppp-kinematic,7:ppp-static
 modes.
>
>

Yes, I am using rtkget to download the relevant SP3 (IGS_EPH) and CLK (IGS_CLK) files also. I am not using any IONEX file since I don't know where to get that.


I also tried submitting the same RINEX file to the online tool CSRS-PPP over here:
http://webapp.geod.nrcan.gc.ca/geod/tools-outils/ppp.php

This online tool works with the automatically generated RINEX 2.11 Observation data file from my Dicom GTR51. I did not submit a separate navigation data file to the site.


However with RTKLib I cannot get PPP calculations to work with just the Observation+SP3+CLK data.

As described before RTKPOST works when I manually generate both Observation and Navigation rinex files from the Dicom - but this option is not automated in the Dicom user interface - so it's not really an option for continuous use.


Anders


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