[IGSSTATION-7880] Re: Tracking of G04 with Septentrio receiver

[Nacho Romero]

Thanks Rolf & Emilio!

We will find all the receivers not yet upgraded to 5.3.2 and target 
emails to the station operators to ensure this problem is addressed.

Thanks for the detailed investigation into this issue, it shows the 
great power of the ACs and the IC/NC to work together since such issues 
are impossible to detect without the high quality processing and the 
high quality metadata within the IGS!

Best regards,
Nacho
_______________________________________________________________

Ignacio (Nacho) Romero
Aerospace Engineer, PhD
CSC Ltd @ ESA/ESOC/OPS-GN
Satellite Navigation Engineer @ ESOC Navigation Support Office
IGS Infrastructure Committee Chair
www.navigation-office.esa.int
www.canaryspaceconsulting.co.uk
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On 18/02/2020 06:02, CODE AC team wrote:
> Dear colleagues,
>
> the new GPS Block IIIA is active as PRN G04 since a few months. We 
> have been concerned in our IGS processing because of a significantly 
> higher amount of observations that are indicated as "bad" for this 
> particular satellite.
>
> When digging down our colleague Emilio discovered that the 
> Melbourne-Wuebbena linear combination for this particular satellite is 
> more noisy than for other satellites for some stations (30 out of 
> 230). All these sites are equipped with a Septentrio receiver 
> (POLARX5*, firmware 5.3.x; see attached file).
>
> Interestingly, there is also a number of sites with the same 
> receiver/firmware (MAR6, SPT0, ONSA, QAQ1, SCOR, VIS0, KIR0, ABMF) 
> where the noise of the MW linear combination is in the usual range.
>
> Some discussions with Martin Lidberg (responsible for most of the 
> "working" receivers) and colleagues from Septentrio have shown:
> - tracking the new L1C signal with a Septentrio receiver is causing 
> these problems with the firmware versions 5.3.0 and 5.3.1
> - the installation of the firmware version 5.3.2 should solve this issue.
>
> Thank you for your consideration.
>
> Best regards
>
> Rolf & Emilio
> on behalf of the CODE AC
>
> PS: The analysis is done based on our database of 30-sec. RINEX2 and 
> RINEX3 files as used for IGS and EPN processing.
>
>
> _______________________________________________
> IGSSTATION mailing list
> IGSSTATION at lists.igs.org
> https://lists.igs.org/mailman/listinfo/igsstation
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