Extended Data Fig. 1: Delay resolution function of GALA-V and standard geodetic VLBI.
From: Intercontinental comparison of optical atomic clocks through very long baseline interferometry

a, Delay resolution functions for the frequency array of GALA-V described in the text and for standard geodetic VLBI (IVS-T2 session, experiment code T2126). GALA-V delay resolution function shows a single peak and fine delay resolution that allows the derivation of the absolute group delay without ambiguity. b, The delay resolution function formed from the frequency array of standard geodetic VLBI shows a delay ambiguity with a period equal to the reciprocal of the greatest common denominator of the frequency interval.