Hi,
Did you switch off integer ambiguity resolution for Glonass under "Options/Setting2" in RTKnavi?
Leave it enable for GPS
This is necesary when using GPS plus GLO otherwise a good fix is almost certainly not possible.
Regards
Anthony

On 01/09/2015 09:53, BREMAUD Jean-Charles wrote:

Hi,

I ‘m currently trying to use rtklib with GPS and GLONASS using L1 only signal, and I never got a fix.

Various tests were performed in :

-post-processing mode (RTKPOST) in static and single, with various types of receiver (Ublox M8 raw data , and from national French CORS stations)

-real-time (RTKNAVI) in static and single (Ublox M8 are used as raw data sources)

In GPS only all tests are OK, but when Glonass is activated no way to have a fix.

For each epoch, the returned error message is always : point pos error (chi-square error nv=9 vv=882.4 cs=13.8)

Using RTKMonitor in RTKNAVI, I can see that residuals are very high.

Any ideas, or suggestions ?

Thanks for your help.

Jean-Charles



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