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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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116:) 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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167:. 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
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Jupiter shown in the image 'Jupiter Marble' as recorded by
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330:"European Involvement in Juno | Europlanet Outreach"
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272:"Jupiter's Gravity Embraces NASA's Juno Spacecraft"
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39:and Earth. Deep Space Network antenna shown here.
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149:KaTS sends tone signal at 35 GHz (X-Band)
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204:(GRACE, gravity science spacecraft for Earth)
89:, and also on Earth, including the high-gain
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371:"What will we learn from the Juno mission?"
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220:(Radio science experiment for Pluto probe)
591:(Jovian Auroral Distributions Experiment)
71:experiment and instrument set aboard the
35:involves using communication hardware on
525:JUNO JUPITER RAW GRAVITY SCIENCE 1 V1.0
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77:Jupiter orbiter is designed to monitor
180:between July 2016 and September 2017.
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299:"Juno's Instruments | Mission Juno"
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597:(Jovian Infrared Auroral Mapper)
466:2018 IEEE Aerospace Conference
208:Jovian Infrared Auroral Mapper
81:'s gravity. It maps Jupiter's
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394:Greicius, Tony (2015-03-13).
97:communication systems of the
354:"Instrument Overview – Juno"
248:"Instrument Overview – Juno"
210:(ASI contributed instrument)
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620:(Ultraviolet Spectrograph)
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474:10.1109/AERO.2018.8396438
428:"Gravity Science Orbits"
197:NASA Deep Space Network
139:Communication signals:
718:Spacecraft instruments
614:(Microwave Radiometer)
118:University La Sapienza
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18:Gravity Science (Juno)
683:New Frontiers program
334:www.europlanet-eu.org
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723:Italian Space Agency
655:Juno Radiation Vault
578:GS (Gravity Science)
161:Microwave Radiometer
83:gravitational field
518:2017-05-09 at the
252:spaceflight101.com
202:GRACE and GRACE-FO
99:Deep Space Network
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713:Juno (spacecraft)
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483:978-1-5386-2014-4
16:(Redirected from
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101:as well as
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437:2017-02-07
410:2017-01-04
380:2017-01-05
339:2017-01-05
308:2017-01-05
281:2017-01-05
257:2017-01-05
225:References
276:Space.com
516:Archived
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191:See also
52:Jupiter.
677:Jupiter
671:Atlas V
509:NASA –
110:Ka-band
79:Jupiter
648:Design
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95:X-band
91:K-band
624:Waves
595:JIRAM
488:S2CID
214:REX (
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694:NASA
589:JADE
583:JEDI
562:Juno
511:Juno
478:ISBN
400:NASA
165:Juno
154:Juno
147:Juno
129:Juno
122:Juno
103:Juno
93:and
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74:Juno
67:The
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33:Juno
618:UVS
612:MWR
606:MAG
470:doi
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