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Mnemonic:

3GM_GRAVITY_FLYBYS

Name:

3GM_GRAVITY_FLYBYS

Description:

Gravity measurement during flyby requires the use of the MGA.
KaT and HAA should be operating during gravity measurements
USO assumed to be ON during the full tour: this should be defined in the scenario set-up and not at 3GM observation approach.
HAA should be in CONFIGURATION mode at least 48 hours before the gravity measurement.
The observation should start with 1 hour of HAA in SELF_CALIBRATION mode. KaT starts with 10min of warm-up.
Additional X/X and X/Ka (DST) link may be required whenever the Sun-
Earth-Spacecraft angle is < 60 deg to cancel noise due to the solar wind plasma.

Payload:

3GM

Pointing

Pointing Type:

Target:

PTRSnippet file:

Advanced

Scheduling Rules:

USO should be ON and scheduled in the background (TO BE SCHEDULED BY SOC AT PLANNING SET-UP)
HAA should be in CONFIGURATION 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.
3GM_GRAVITY should be scheduled for 3 consecutive communication passes centered around flyby C/A. If not PRIME, MGA is used.

any rule that is used to schedule the observation: repetition rules, continuous (plasma instruments), one-off, every orbit, every day, etc

Avoidance Rules:

no WOL should occur between 2 consecutive measurements

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

Comments:

Support Plot 1:

Support Plot 2:

Support Plot 3:

Commanding

ITLSnippet file:

Related segment definitions

	Segmentdefinition
Segment	CALLISTO_FLYBY_3GM
Segment	EUROPA_FLYBY_3GM
Segment	GANYMEDE_FLYBY_3GM

Power profiles

	Event	Time	Power (Watts)	Comment
Start -01:00:00 17.8 [Watt]	Start	-01:00:00	17.8	This is total power for 3GM instrumentation. Note that USO and HAA are considered always ON in the background. HAA from CONFIGURATION to SELF_CALIBRATION
Start 00:00:00 51.8 [Watt]	Start	00:00:00	51.8	This is total power for 3GM instrumentation. Note that USO and HAA are considered always ON in the background. HAA from SELF_CALIBRATION to SCIENCE. KAT from OFF to SCIENCE
End 00:00:00 17.8 [Watt]	End	00:00:00	17.8	This is total power for 3GM instrumentation. Note that USO and HAA are considered always ON in the background. HAA from SCIENCE to CONFIGURATION. KAT from SCIENCE to OFF

Data profiles

	Event	Time	Data flow	Data Rate (bit/s)	Comment
Start -01:00:00 SELECTOR 50.0 [bit/s]	Start	-01:00:00	SELECTOR	50.0	HAA in SELF_CALIBRATION
Start 00:00:00 SELECTOR 1594.0 [bit/s]	Start	00:00:00	SELECTOR	1594.0	HAA in SCIENCE
End 00:00:00 SELECTOR 50.0 [bit/s]	End	00:00:00	SELECTOR	50.0	HAA in CONFIGURATION

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