PRIME — A Passive Radar Sounding Concept for Io

Steinbruegge, Gregor; Romero-Wolf, A.; Peters, Sean T.; Schroeder, Dustin M.; Carrer, Leonardo; Hamilton, C. W.; Carter, L.; Bierson, C. J.; Blankenship, D. D.; Chan, Kristian; Fanara, Lida; Grima, C.; Hay, H. C. F. C.; Hußmann, H.; Keane, J. T.; Maurice, Maxime; Nikolaou, Athanasia; Rosas-Ortiz, Yaquelin M.; Scanlan, K. M.; Soderlund, K. M.; Stark, Alexander; Varatharajan, Indhu; Voigt, Joana; Young, D. A.

doi:10.3847/25c2cfeb.49659984

Cited by 3 publications

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“…The Uranian passive sounder concept is based on prior concepts for sounding of Jupiter's Galilean moons using Jovian radio bursts (Romero‐Wolf et al., 2015; Schroeder et al., 2016; Steinbrügge et al., 2021). Passive sounding has been demonstrated experimentally on Earth using reflections of the Sun's quiescent radio emissions reflected off the ocean (Peters et al., 2018), sand (Peters et al., 2021), and water beneath 1 km of ice in Greenland (Peters et al., 2021).…”

Section: Concept Overviewmentioning

confidence: 99%

“…This study assumes an instrument with similar specifications as the Cassini Radio and Plasma Wave Science (Gurnett et al, 2004) but with a modified digitizer and signal processing chain to perform the cross-correlation of the data needed for passive sounding. The study is analogous to the passive sounding feasibility studies done for Jovian moons using Jovian radio bursts (Romero-Wolf et al, 2015;Schroeder et al, 2016;Steinbrügge et al, 2021). In Section 2 we will provide a concept overview and then summarize the current knowledge of the radio source properties.…”

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confidence: 99%

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Feasibility of Passive Sounding of Uranian Moons Using Uranian Kilometric Radiation

Romero‐Wolf,

Steinbrügge,

Castillo‐Rogez

et al. 2024

Earth and Space Science

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We present a feasibility study for passive sounding of Uranian icy moons using Uranian Kilometric Radio (UKR) emissions in the 100–900 kHz band. We provide a summary description of the observation geometry, the UKR characteristics, and estimate the sensitivity for an instrument analogous to the Cassini Radio Plasma Wave Science (RPWS) but with a modified receiver digitizer and signal processing chain. We show that the concept has the potential to directly and unambiguously detect cold oceans within Uranian satellites and provide strong constraints on the interior structure in the presence of warm or no oceans. As part of a geophysical payload, the concept could therefore have a key role in the detection of oceans within the Uranian satellites. The main limitation of the concept is coherence losses attributed to the extended source size of the UKR and dependence on the illumination geometry. These factors represent constraints on the tour design of a future Uranus mission in terms of flyby altitudes and encounter timing.

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