Relevance of Antfile, Posfile, dcbfile parameters?

Reach Module / M+ / M2 RTK / PPK configuration
1

Yesterday I measured with Reach. In parallel I calculated the solution on my laptop using RTKNAVI 2.4.3 demo4 b18 executables from rtklibexplorer blog. I just forwarded the signals from the base and the rover via tcpsvr to RTKNAVI.
I could see, that the RTK solution differed about 1.5 meters. Also the solution in RTKNAVI was a lot more stable:

comparison.png2560×1366 290 KB

When i removed the following parameter-files the situation changed:
file-satantfile =…/…/…/data/igs05.atx
file-rcvantfile =…/…/…/data/igs05.atx
file-staposfile =…/…/…/data/station.pos
file-dcbfile =…/…/…/data/P1C1_ALL.DCB

I just did not set these values (like in RTKNAVI).
The results just differed 1-2 centimeters and the fix in reach was a lot faster and more stable:

comparison2.png2560×1365 229 KB

So my questions are:

  • From where is this huge difference coming?
  • Are these parameter files really needed? In the RTKLIB documentation I just found, that they are needed for PPP
2

Hi, How do you remove these files from reach?

3

You just have to clear the setting(s) in the advanced configuration. You don’t have to delete the files.

4

@MichaelEFlip

I think that this is a coincidence. These files only have effect when making PPP, and the settings are RTKLIB default for rtkrcv.

I have tested postprocessing the files with and without the files specified and there was no difference.

Are you able to reproduce this behaviour?

5

I could not reproduce this strange behaviour in my last tests.