Juice-SWI during the Lunar-Earth-Gravity-Assist (LEGA) – Part 2: Instrument operations
Abstract
The Jupiter Icy Moons Explorer (Juice) embarked in 2023 on a 8-year interplanetary journey to Jupiter and its icy moons. The Submillimetre Wave Instrument (SWI) is one of the ten science instruments aboard the spacecraft. SWI is a sophisticated and first-of-its-kind payload visiting the outer solar system, featuring dual-band tunable receivers, two independent pointing mechanisms, and spectrometers capable of high resolution (up to a resolving power of 10 7 ). It is designed to support the diverse science objectives of the Juice mission targeting Jupiter's middle atmosphere, icy-moon's exospheres as well as near sub-surface thermophysical properties. For this purpose the Juice mission adopts a complex trajectory tour within the Jovian system, which further necessitates a sophisticated, mission-driven operations concept for SWI. This presents significant planning, operations and commanding challenges which are described in this paper in the context of the Lunar and Earth Gravity Assist (LEGA). After the development and ground calibration of the instrument, the SWI Team has designed a comprehensive calibration strategy applicable during the Cruise Phase of Juice. Among the various opportunities for calibration, including the Near-Earth Commissioning Phase and more than ten Payload Checkout Windows, the LEGA offers the means not only to improve the calibration of the instrument, but also to validate the operational strategy of future icy moon flybys.
Versions
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BibTeX
@article{cavalie2026juiceswi,
title = {{Juice-SWI during the Lunar-Earth-Gravity-Assist (LEGA) – Part 2: Instrument operations}},
author = {Thibault Cavalié and Raphael Moreno and Ladislav Rezac and Fabrice Herpin and Christopher Jarchow and Paul Hartogh and Alberto Carrasco Gallardo and Samuel Goodyear and Pierre Mancini and Ali Schulz-Ravanbakhsh and Borys Dabrowski and Yasuko Kasai and Emmanuel Lellouch and Axel Murk and Donal Murtagh and Michael Olberg and Miriam Rengel and Hideo Sagawa and Slawomira Szutowicz and Eva Wirström},
journal = {Annales Geophysicae},
year = {2026},
month = sep,
doi = {10.5194/angeo-44-461-2026},
eprint = {2609.27569},
archivePrefix = {arXiv},
url = {https://hal.science/hal-05761959v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Juice-SWI during the Lunar-Earth-Gravity-Assist (LEGA) – Part 2: Instrument operations
AU - Thibault Cavalié
AU - Raphael Moreno
AU - Ladislav Rezac
AU - Fabrice Herpin
AU - Christopher Jarchow
AU - Paul Hartogh
AU - Alberto Carrasco Gallardo
AU - Samuel Goodyear
AU - Pierre Mancini
AU - Ali Schulz-Ravanbakhsh
AU - Borys Dabrowski
AU - Yasuko Kasai
AU - Emmanuel Lellouch
AU - Axel Murk
AU - Donal Murtagh
AU - Michael Olberg
AU - Miriam Rengel
AU - Hideo Sagawa
AU - Slawomira Szutowicz
AU - Eva Wirström
PY - 2026
DA - 2026/09/23
JO - Annales Geophysicae
DO - 10.5194/angeo-44-461-2026
UR - https://hal.science/hal-05761959v1
AB - The Jupiter Icy Moons Explorer (Juice) embarked in 2023 on a 8-year interplanetary journey to Jupiter and its icy moons. The Submillimetre Wave Instrument (SWI) is one of the ten science instruments aboard the spacecraft. SWI is a sophisticated and first-of-its-kind payload visiting the outer solar system, featuring dual-band tunable receivers, two independent pointing mechanisms, and spectrometers capable of high resolution (up to a resolving power of 10 7 ). It is designed to support the diverse science objectives of the Juice mission targeting Jupiter's middle atmosphere, icy-moon's exospheres as well as near sub-surface thermophysical properties. For this purpose the Juice mission adopts a complex trajectory tour within the Jovian system, which further necessitates a sophisticated, mission-driven operations concept for SWI. This presents significant planning, operations and commanding challenges which are described in this paper in the context of the Lunar and Earth Gravity Assist (LEGA). After the development and ground calibration of the instrument, the SWI Team has designed a comprehensive calibration strategy applicable during the Cruise Phase of Juice. Among the various opportunities for calibration, including the Near-Earth Commissioning Phase and more than ten Payload Checkout Windows, the LEGA offers the means not only to improve the calibration of the instrument, but also to validate the operational strategy of future icy moon flybys.
SN - 0992-7689
SN - 1432-0576
ER -