USO should be ON and scheduled in the background (TO BE SCHEDULED BY SOC AT PLANNING SET-UP)
HAA should be in STANDBY mode and scheduled in the background (TO BE SCHEDULED BY SOC AT PLANNING SET-UP).
If HAA is OFF, HAA needs to be ON at least 48hours before measurement starts.
Latitudes should be repeated at regular intervals to characterise evolution of wave phenomena and middle-atmospheric temperatures. Occultation observations are event-driven and defined by the Earth-SC line reaching the '1-bar level plus 1000 km'. This observation should be preceded by 3GM_HAA_CALIBRATION
any rule that is used to schedule the observation: repetition rules, continuous (plasma instruments), one-off, every orbit, every day, etc