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The 53-day orbit (rather than the originally planned orbit) produced certain challenges for the GS experiment, which required signals to be sent between the DSN on Earth and the spacecraft. It was possible to make measurements, although various configurations were tried for the first five
Perijoves
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It was possible to use the data from the observations, and from just the first two
Perijoves the accuracy of Jupiter's gravity field record was increased by factor of five according to one report. This data allowed further insight to Jupiter's internal structure.
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gravity experiment makes use of spacecraft's antenna, which are used to send radio signals to Earth with precise timing. This allows the
Doppler effect to be recorded, which in turn allows the calculation of the gravity field around
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The GS experiment uses Deep Space
Network's DSS-25 antenna which is equipped with simultaneous dual X- and Ka-band transmitters and receivers, as well as the spacecraft which also has X and Ka-band radio systems.
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experiment measures these velocity changes using a combination of hardware on Earth and the spacecraft, which allows the effect of gravity to be measured, and thereby mass variations in
Jupiter's interior.
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The GS was planned out to be used on orbits 4, orbit 9, and orbits 10 through 32. When GS operates it must point its antenna at Earth, and is not operated simultaneously with the
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to be determined to within 0.001 millimeters per second. The spacecraft receives a tone signal on the Ka band and then replies using the X-band radio.
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105:) to measure the spacecraft's velocity over time. The KaTS box was funded by the Italian Space Agency and overseen by professor Luciano Iess from
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Buccino, D.; Kahan, D.; Yang, O.; Oudrhiri, K. (March 2018). "Initial operations experience and results from the Juno gravity experiment".
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in Rome. KaTS detects signals coming from the DSN on Earth, and then sends replies in a very precise way that allows the velocity of
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As the spacecraft traverses the space near
Jupiter, the planet, and even variations in the planets interior, cause a variation in
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156:. The parameters of the GS experiment were adjusted to account for a 53-day orbit the Juno spacecraft ended up being in.
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Additional data collections refined by understanding of the early recordings is planned for the experiment.
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Translator System (KaTS). These components work together to detect minute changes in radio frequency (
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launched in 2011 and arrived at
Jupiter orbit in July 2016.
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Jupiter shown in the image 'Jupiter Marble' as recorded by
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319:"European Involvement in Juno | Europlanet Outreach"
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261:"Jupiter's Gravity Embraces NASA's Juno Spacecraft"
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28:and Earth. Deep Space Network antenna shown here.
574:(Jupiter Energetic-particle Detector Instrument)
138:KaTS sends tone signal at 35 GHz (X-Band)
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193:(GRACE, gravity science spacecraft for Earth)
78:, and also on Earth, including the high-gain
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360:"What will we learn from the Juno mission?"
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209:(Radio science experiment for Pluto probe)
580:(Jovian Auroral Distributions Experiment)
60:experiment and instrument set aboard the
24:involves using communication hardware on
514:JUNO JUPITER RAW GRAVITY SCIENCE 1 V1.0
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66:Jupiter orbiter is designed to monitor
169:between July 2016 and September 2017.
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288:"Juno's Instruments | Mission Juno"
20:The gravity science experiment for
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385:"Juno Spacecraft and Instruments"
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586:(Jovian Infrared Auroral Mapper)
455:2018 IEEE Aerospace Conference
197:Jovian Infrared Auroral Mapper
70:'s gravity. It maps Jupiter's
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383:Greicius, Tony (2015-03-13).
86:communication systems of the
343:"Instrument Overview – Juno"
237:"Instrument Overview – Juno"
199:(ASI contributed instrument)
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609:(Ultraviolet Spectrograph)
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463:10.1109/AERO.2018.8396438
417:"Gravity Science Orbits"
186:NASA Deep Space Network
128:Communication signals:
707:Spacecraft instruments
603:(Microwave Radiometer)
107:University La Sapienza
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672:New Frontiers program
323:www.europlanet-eu.org
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712:Italian Space Agency
644:Juno Radiation Vault
567:GS (Gravity Science)
150:Microwave Radiometer
72:gravitational field
507:2017-05-09 at the
241:spaceflight101.com
191:GRACE and GRACE-FO
88:Deep Space Network
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702:Juno (spacecraft)
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472:978-1-5386-2014-4
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560:Instruments
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90:as well as
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662:(launcher)
553:spacecraft
426:2017-02-07
399:2017-01-04
369:2017-01-05
328:2017-01-05
297:2017-01-05
270:2017-01-05
246:2017-01-05
214:References
265:Space.com
505:Archived
481:49540278
180:See also
41:Jupiter.
666:Jupiter
660:Atlas V
498:NASA –
99:Ka-band
68:Jupiter
637:Design
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84:X-band
80:K-band
613:Waves
584:JIRAM
477:S2CID
203:REX (
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683:NASA
578:JADE
572:JEDI
551:Juno
500:Juno
467:ISBN
389:NASA
154:Juno
143:Juno
136:Juno
118:Juno
111:Juno
92:Juno
82:and
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63:Juno
56:The
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38:Juno
36:The
26:Juno
22:Juno
607:UVS
601:MWR
595:MAG
459:doi
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