Does anyone know what are the settings to be made to obtain Q=3 or 4 in RTKpost ?
Hi @NovaSL,
The Q value after post-processing shows the solution obtained in the results. It can be 1, 2, 4, or 5. Q=4 means DGPS, but if everything goes smoothly, it should be 1, meaning a FIX solution. I can hardly give recommendations for the proper settings in RTKPOST, but if you share your data, I can check its post-processing in Emlid Studio.
Or do you refer to another Q value?
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Thank you, what I wanted to clarify was that if I get a Q=2 OR 1,does that mean SBAS satellites have been included for the processing ? because in the user manual of RTKLIB it says that if the SBAS are included Q=4.
Hi @NovaSL,
SBAS can be included in post-processing in different ways. I can’t provide straightforward settings to use in RTKPOST, but I suggest looking through this article—it covers useful hints about how RTKLIB handles SBAS. I hope it helps.
Thank you ! .I processed as the way given in this article. But in my case only the GPS satellites have been used for processing. I there any particular reason for that?
In my observation file I have many satellites available including GPS,GALELLIO,BEIDOU,GLONASS,SBAS but in rtkpost only GPS satellites have been used for the processing (about 6 or 7 satellites). why is that ?
Hi @NovaSL,
The only thing I can associate with here is that if SBAS ephemeris corrections are enabled, it will eliminate all the non-GPS satellites in the solution. But if that’s not the case, I’m afraid I can hardly come up with further troubleshooting steps.
My guess would be that your RINEX NAV file only has data for the GPS system. Make sure it has data for all the systems you want to process.
Typically a multi-system NAV file will end with a ‘p’. Some software might only create separate NAV files for each system. In this case those ending with an ‘n’ are for GPS, a ‘g’ for Glonass, etc. If you have these types of NAV files you will have to enter each individually or use the wildcard character ‘?’ and enter ‘rover.25?’ (for rover.25n, rover.25g, rover.25c, etc.).
Even if you do this the same problem will happen if you use precise (SP3) files. They also need to have data for every system you want to process.
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Yes you are correct. I have separate nav files for each system. Could you explain me how to input all those navigation files at the same time plz?
I did just explain that you can use a wildcard character like ‘?’. You can also use a ‘*’. Read the RTKLIB manual under the RTKPOST section for more info.
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have you tried it? When I tried it doesn’t allow to input different nav files from different constellations since their extensions are different (.24N,.24G,.24C,24H)