Analysis of 3GM Callisto Gravity Experiment of the JUICE Mission

Benedetto, Mauro Di; Cappuccio, Paolo; Molli, Serena; Federici, Lorenzo; Zavoli, Alessandro

doi:10.48550/arxiv.2101.03401

Cited by 2 publications

(4 citation statements)

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“…We thus considered 8 h per day of almost continuous tracking, except during occultations or for elevations lower than 15 deg (as in e.g. Di Benedetto et al, 2021;Magnanini, 2021).…”

Section: Estimation Settingsmentioning

confidence: 99%

“…The JUICE spacecraft will carry one dedicated radio science instrument (3GM: Gravity and Geophysics of Jupiter and the Galilean Moons, e.g. Di Benedetto et al, 2021), which will provide highly accurate range and Doppler measurements (see Section 3.3). These 3GM observations will be complemented by the PRIDE experiment (Planetary Radio Interferometry and Doppler Experiment, e.g.…”

Section: Introductionmentioning

confidence: 99%

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Decoupled and coupled moons’ ephemerides estimation strategies application to the JUICE mission

Fayolle

Dirkx

Lainey

et al. 2022

Planetary and Space Science

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“…We thus considered 8 h per day of almost continuous tracking, except during occultations or for elevations lower than 15 deg (as in e.g. Di Benedetto et al, 2021;Magnanini, 2021).…”

Section: Estimation Settingsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Decoupled and coupled moons’ ephemerides estimation strategies application to the JUICE mission

Fayolle

Dirkx

Lainey

et al. 2022

Planetary and Space Science

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“…Genova et al (2022) computed gravity/ topography admittance profiles using theoretical models of Callisto's interior, indicating that an accurate knowledge of the gravity field to a degree and order l > 80 is sufficient to fully characterize the ice shell density. Moreover, the gravity-field model of Callisto plays a critical role in precisely computing the orbits of Callisto's space satellites (Di Benedetto et al 2021). Given the significance of the Callisto gravity-field model in both science objectives and satellite navigation, we propose an inter-satellite observation mode to improve the accuracy of gravity-field estimation for the "Tianwen-IV" mission.…”

Section: Introductionmentioning

confidence: 99%

“…Cappuccio et al (2022) evaluated the expected results of the Callisto gravity field from the JUICE's mission through simulation experiments. Di Benedetto et al (2021) simulated the effect of different trajectories on the estimation of the gravity-field model and the Love number k 2 for Callisto. Genova et al (2022) conceived a MAGIC mission concept for Callisto and designed comprehensive numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Callisto Gravity-field Determination Using the Inter-satellite Range-rate Link

Sun,

Yan,

Gao

et al. 2024

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China will launch the “Tianwen-IV” mission around 2030, focusing on the orbiting exploration of Jupiter and Callisto, a moon of Jupiter. As part of this ambitious mission, a main satellite will carry another satellite that will be released in the Jupiter system to continue its journey toward Uranus. Considering the current mission planning, we propose an inter-satellite radio-observation mode that differs from the conventional observation mode of tracking from Earth to precisely determine the orbit of the satellites. Given the significance of the Callisto gravity field model in both science objectives and satellite navigation, we have conducted a series of simulation experiments to evaluate the potential of this inter-satellite range-rate data for accurately estimating the Callisto gravity field. The results obtained from the analysis demonstrate that by utilizing 40 days of ground station observations, it is possible to estimate the gravity field model of Callisto up to a degree of 70. Remarkably, when combining these ground station observations with inter-satellite observations, a comparable level of accuracy can be achieved with just 10 days of observations. Furthermore, with reduced inter-satellite observation noise, accuracy improves, enabling estimation up to 80 degrees or higher. Initial inter-satellite distance selection impacts estimation accuracy. These findings serve as a valuable test bed for the future “Tianwen-IV” mission to perform precise orbit determination and gravity field model estimation to reduce reliance on deep space stations.

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Analysis of 3GM Callisto Gravity Experiment of the JUICE Mission

Cited by 2 publications

References 0 publications

Decoupled and coupled moons’ ephemerides estimation strategies application to the JUICE mission

Decoupled and coupled moons’ ephemerides estimation strategies application to the JUICE mission

Assessment of Callisto Gravity-field Determination Using the Inter-satellite Range-rate Link

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