Retrieving "Planetary Tidal Friction" from the archives

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1. Satellite Navigation

   Linked via "planetary tidal friction"

   International Terrestrial Reference Frame (ITRF)
   All modern navigation constellations are nominally referenced to the International Terrestrial Reference Frame (ITRF), which is continuously updated through combined measurements from Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR), and [Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS)](/entries/doppler-orbitography-and-radiopositioning-inte…