[IGSMAIL-8697] Reminder: IGS Combined GLONASS Experimental Products to Be Discontinued [SEC=OFFICIAL]

[Salim Masoumi]

Dear Colleagues,

Following the provision of the multi-GNSS demonstration combined products, as announced in [IGSMAIL-8682]<https://lists.igs.org/pipermail/igsmail/2026/008678.html>, this is a reminder that the IGS combined GLONASS experimental products (Ultra-rapid: igv* and Final: igl*) will no longer be provided starting from the products of GPS week 2418 (2026, Day of Year 130 / 10 May 2026).

The following products will no longer be provided after this date:

  1.  IGS combined GLONASS experimental Final orbits: igl<wwww><d>.sp3.Z
  2.  GLONASS Final orbit combination summary files: igl<wwww>7.sum.Z
  3.  IGS combined GLONASS experimental ultra-rapid orbits: igv<wwww><d>_<hr>.sp3.Z
  4.  GLONASS ultra-rapid orbit combination summary files: igv<wwww><d>_<hr>.sum.Z

Users who rely on GLONASS products are advised to transition their workflows to the multi-GNSS combined products (IGS0DEMULT* and IGS0DEMFIN*).

This change does not affect the provision of the combined operational (GPS-only) products (IGS0OPSFIN*).

Please contact acc at igs.org<mailto:acc at igs.org> if you have any concerns or require support with the transition.

Best Regards,


Salim Masoumi Ph.D. |  GNSS Team Leader
GNSS Analysis Section  |  Positioning Australia Branch
Space Division

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

Mon to Fri: 9:00 - 17:00

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