[IGSMAIL-8700] Preliminary estimated LRA offsets for G082 and G083

[Steigenberger, Peter]

Dear colleagues,

the latest two GPS satellites G082 and G083 launched in January and 
April 2026 are both equipped with retroreflector arrays for satellite 
laser ranging.

https://www.spaceforce.mil/News/Article-Display/Article/3832649/lockheed-martin-receives-laser-retroflector-arrays-for-gps-iii-sv9-sv10/

https://www.ssc.spaceforce.mil/Newsroom/Article-Display/Article/4465444/us-space-force-delivers-final-gps-iii-to-orbit-advancing-its-most-resilient-con

G082 is tracked by stations of the ILRS since beginning of March 2026. 
Based on about 6 weeks of normal points and CODE rapid orbits, the 
follwing preliminary LRA offsets have been estimated:

**SVN_ Equipment___________ T ____X_[m] ____Y_[m] ____Z_[m] 
Comment___________________________
  G082 LRA_GPS_III          L    1.2100    0.1300    2.1400 gps82, prel. 
est. DLR*

The residual RMS applying these LRA offsets is about 4 cm. These LRA 
offsets have been added to the IGS satellite metadata file for both, 
G082 and G083:

https://files.igs.org/pub/station/general/igs_satellite_metadata.snx

Best regards,

Peter

----------------------------------------------------
Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)
German Space Operations Center Oberpfaffenhofen
Münchener Strasse 20, D-82234 Wessling, Germany

Peter Steigenberger

Tel.+49 (8153) 28-3765
e-mailpeter.steigenberger at dlr.de
<mailto:peter.steigenberger at dlr.de>----------------------------------------------------

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