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The radio science experiment 3GM, with its dual-frequency radio links (X and Ka-band) referenced to an ultrastable oscillator (USO), is performed as JUICE spacecraft moves in and out of occultation. Occultations occur throughout the jovian tour, but their phasing is not always synchronized with the timing of dedicated Jupiter observations by the other orbiter experiments. USO unmuted, HAA in NOMINAL SCIENCE.
Note that 2 other options exist for torus occultations but are not (yet) defined in the database




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
conditions that make the observation not possible (e.g. thruster firing)