I wonder how this compares to the precision of the GRACE-FO Laser Ranging Interferometers. Maybe this new comb method would allow for newer cheaper versions of

I wonder how this compares to the precision of the GRACE-FO Laser Ranging Interferometers. Maybe this new comb method would allow for newer cheaper versions of the satellites. https://en.wikipedia.org/wiki/GRACE_and_GRACE-FO#GRACE_Follow-On https://en.wikipedia.org/wiki/GRACE_and_GRACE-FO#GRACE_Follo...