Logs Base – error GLONASS. The error of the position in the method RTN

[El_Geodetos (Pawel Jakubowski)]

Reach RTK
Reach View 2.22.4

GLONASS lacks in the log of the base but the data NMEA seems to be correct.

base_202005200900_RINEX-3_03.zip (837.5 KB) base_202005200900_rtcm3.zip (1.1 MB) raw_202005200900_RINEX-3_03.zip (3.8 MB) raw_202005200900_ubx.zip (4.3 MB) solution_202005200900_NMEA.zip (416.3 KB) simple report.zip (1.1 KB)

[tatiana.andreeva]

Hi Pawel,

Thanks for sharing! I’ll look into the data.

[El_Geodetos (Pawel Jakubowski)]

Error in ReachView 2.22.4 he is the most probably. ReachView 2.22.3 ok.

base_202004161044_RINEX-2_11.zip (2.5 MB) base_202004161044_rtcm3.zip (2.3 MB)

[tatiana.andreeva]

Hi Pawel,

I’ve checked the data and the GLONASS L1 observations are present. It seems they indeed aren’t shown when the “All” option is chosen, however, if you chose “L1”, you can see GLONASS satellites:

Any chance you can share the UBX file from the base? I’d like to look into why RTKPLOT interprets obs file from v2.22.4 this way.

[El_Geodetos (Pawel Jakubowski)]

Hi Tatiana

thank for the interest oneself this subject. I also already noticed that you can see GLONASS in „L1” . I sent all logs from the measurement from the day 20-05-2020. My base is VRS (by NTRIP).
However I would prefer to analyse the different example

base_202005080758_RINEX-3_03.zip (865.4 KB) base_202005080758_rtcm3.zip (1.2 MB) raw_202005080758_RINEX-3_03.zip (5.3 MB) raw_202005080758_ubx.zip (6.1 MB) NMEA.ZIP (848.7 KB)

[El_Geodetos (Pawel Jakubowski)]

The analysis of the data

The measurement was executed on the supervisory point without the change of the position. Disturbances in Rover were purposeful. The method PPK gives the correct solution. There is the mistake of the position in the method RTN. IN PPK was used become the base (VRS) with lacking observations GLONASS.
What is the cause of the incorrect position in the method RTN?

[tatiana.andreeva]

Hi Pawel,

Sorry it took so long to get back to you.

We’ve recently released the v2.22.5 firmware version that should resolve some RTK instability issues on Reach devices and improve the performance.

May I ask you to test your Reach Module with this firmware version to check how it works?

[El_Geodetos (Pawel Jakubowski)]

Hi Tatiana

He thanks for the answer. I use the Reach M2 which works on the version of software internal v2.22.5 very well now. I do not use any more Reach RTK that is why unfortunately I can not confirm if he works now correctly.

[tatiana.andreeva]

Hi Pawel,

Glad to hear Reach M2 works fine for you.

Please let me know if you need any help with any of our receivers.