Future gravity missions like GRACE Follow-on and beyond will deliver low-low satellite-to-
satellite ranging measurements of a much increased precision on the order of nanometers.
This necessitates a re-evaluation of the processes used in gravity field determination with an
eye to numerical stability and computational precision. This study investigates the
computation of dynamic orbits, which are used for multiple purposes in gravity recovery.
They are, for example, used in computing linearized observations for the low-low satellite-to …

Future gravity missions like GRACE Follow-On and beyond will deliver low-low satellite-to-
satellite ranging measurements of much increased precision. To prepare for the new
challenges and opportunities involved in processing this new data, it is necessary to perform
a systematic review and re-evaluation of current algorithms and assumptions used in gravity
field determination from GRACE data.