[IGSMAIL-8079] Re: Delay in IGS Ultra-rapid products 21665_12 [SEC=OFFICIAL]

Sat Jul 17 07:17:48 UTC 2021

Dear Colleagues,

There was a subsequent delay of about 3 hours for the IGS ultra-rapid products for GPS week 2166, dow 5, hour 18. After further investigation, the problem was due to the failure in the update of the IERS Bulletin A file in the operational server.

The problem is now resolved, and the UT1-UTC integration is also back to using the normal 5-day window of non-predicted values.

Apologies again for the inconvenience.

Kind Regards,

Salim Masoumi, PhD.  |  GNSS Analyst  |  Positioning
National Positioning Infrastructure  | Place, Space and Communities Division

t +61 2 6249 9688    www.ga.gov.au<http://www.ga.gov.au/>

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From: IGSMail <igsmail-bounces at lists.igs.org> On Behalf Of Salim Masoumi
Sent: Saturday, 17 July 2021 5:14 AM
To: igsmail at lists.igs.org
Subject: [IGSMAIL-8078] Delay in IGS Ultra-rapid products 21665_12 [SEC=OFFICIAL]

Dear Colleagues,

There was a delay of about 4 hours in the submission of IGS ultra-rapid combination for GPS week 2166, dow 5, hour 12. The delay was caused by a problem in automatic integration of UT1-UTC values from the IERS Bulletin A, which stopped the ERP combination. I have now submitted the delayed orbit and ERP products.

Please note that the UT1-UTC value for the submitted ERP file is integrated from one day before the last non-predicted value of Bulletin A, as opposed to the normal 5 day prior. This does not impact the combined orbits, nor the combined ERP values (Xpole,Ypole, Xrate, Yrate and LOD).

Apologies for any inconvenience this delay may have caused to you.

Kind Regards,
Salim

Salim Masoumi, PhD.  |  GNSS Analyst  |  Positioning
National Positioning Infrastructure  | Place, Space and Communities Division

t +61 2 6249 9688    www.ga.gov.au<http://www.ga.gov.au/>

[cid:image006.png at 01D239A5.39C6E990]<http://www.ga.gov.au/>

[cid:image002.png at 01D239A5.39C6E990]<https://twitter.com/GeoscienceAus>[cid:image003.png at 01D239A5.39C6E990]<https://www.facebook.com/GeoscienceAustralia>[cid:image007.png at 01D239A5.39C6E990]<https://www.youtube.com/user/GeoscienceAustralia>[cid:image008.png at 01D239A5.39C6E990]<https://www.linkedin.com/company/geoscience-australia>

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