[IGSMAIL-8673] Re: GPS-51/G20 L2C data!?

[Peter Steigenberger]

Dear Tim,

this is the latest GPS-III satellite G082 lauched in January 2026, see 
https://files.igs.org/pub/station/general/igs_satellite_metadata.snx

Best regards,

Peter

Am 23.02.2026 um 18:53 schrieb Tim Springer:
>
> Dear IGS Colleagues,
>
> I noticed in our rapid processing that the biases from GPS-51/G20 have 
> jumped.
>
> Digging into this I noticed that we all of a sudden have C2L and C2X 
> data although this is an old BLOCK IIR-A satellite!? These are 
> incapable to transmit these signals. Nevertheless there are at least 
> 40 IGS stations reporting C2L/C2X data from this satellite. So it 
> seems pretty real. The satellite is flagged as unhealthy and according 
> to the NAGU 2026006 from January 8, 2026, it is officially 
> decommissioning. So no clue what is happening to this satellite. 
> Scientifically it may be interesting to see if the old satellites can 
> somehow transmit C2L/C2X signals…. The data of the satellite looks 
> fine both 2W and 2L/2X.
>
> If anybody knows what is going on with the satellite I am very 
> interested to learn about it.
>
> Cheers,
>
> Tim
>
> *Dr. Tim Springer*
> Navigation Engineer
>
> PosiTim UG (haftungsbeschraenkt)
> Navigation Concepts (NSD), OPS-GN
> ESOC - European Space Operations Centre
> Robert-Bosch-Straße 5, Room S521
> 64293 Darmstadt, Germany
> Tel.: +49 6151 90 2029
>
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