Testing radar to peer into Jupiter's moons
by Staff Writers
Paris (ESA) Dec 28, 2021
A 1:18 scale model of Juice, ESA's spacecraft to explore the Jupiter system, is being employed to test its radar antenna.
The working version of the RIME instrument (Radar for Icy Moons Exploration), incorporating a 16-m long version of the straight 'dipole' boom seen here under the model spacecraft, will probe up to 9 km deep under the surfaces of the gas giant's main 'Galilean' moons.
The testing took place in ESA's Hertz (Hybrid European RF and Antenna Test Zone) chamber based at ESA's ESTEC technical heart in the Netherlands.
Metal walls screen outside radio signals, while spiky foam interior cladding absorbs radio signals internally to create conditions simulating the infinite void of space.
This chamber's hybrid nature makes it unique: Hertz can assess radio signals from antennas either on a local 'near-field' basis or as if the signal has crossed thousands of kilometres of space, allowing it to serve all kinds of satellites and antenna systems.
Watch a video on the testing here.Related Links
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Sounds from a Ganymede flyby, magnetic fields, and remarkable comparisons between Jupiter and Earth's oceans and atmospheres were discussed during a briefing on NASA's Juno mission to Jupiter at the American Geophysical Union Fall Meeting in New Orleans. Juno Principal Investigator Scott Bolton of the Southwest Research Institute in San Antonio has debuted a 50-second audio track generated from data collected during the mission's close flyby of the Jovian moon Ganymede on June 7, 2021. Juno's Wave ... read more
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