70-m ground station required because of performance and receiver channel allocations. during GEO and GCO5000.
USO assumed to be ON during these phases: this should be defined in the scenario set-up and not at 3GM observation approach. HAA should be in STANDBY mode at least 48 hours before the gravity measurement. The observation should start with 1 hour of HAA in CALIBRATION mode.
USO is unmuted 4 hours before pointing starts and muted back 4 hours after pointing ends.
any rule that is used to schedule the observation: repetition rules, continuous (plasma instruments), one-off, every orbit, every day, etc