Measurement of the Dielectric Properties Performed by HASI-PWA at the Huygens Landing Site: Implications for Titan Surface Characterization

Details Measurement of the Dielectric Properties Performed by HASI-PWA at the Huygens Landing Site: Implications for Titan Surface Characterization Measurement of the Dielectric Properties Performed by HASI-PWA at the Huygens Landing Site: Implications for Titan Surface Characterization

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agusm.p41b..13s&link_type=abstract

American Geophysical Union, Spring Meeting 2007, abstract #P41B-13

Physics

0604 Antenna Arrays, 5109 Magnetic And Electrical Properties (0925), 6281 Titan

Scientific paper

The safe landing of the Huygens Probe on Titan allowed the measurement of the dielectric properties of the surface. The Permittivity, Waves, and Altimetry (PWA) analyser, a subunit of the Huygens Atmospheric Structure Instrument (HASI), included a mutual impedance probe mounted on two booms that measured the dielectric properties of the surface during approximately 30 min. The array configuration on the booms, together with the coupling between the soil and the atmosphere, requires a careful evaluation of the attitude of the Huygens Probe on the surface for assessing the dielectric properties with good accuracy. In this paper we present the calibrated data set of PWA, including reference values to evaluate the permittivity and the conductivity of the surface. The dielectric properties contribute to the characterization of the medium and provide unique constraints of soil composition. Furthermore, surface measurements made with PWA at the landing site are useful for comparison with Cassini radar data, which evaluates surface properties at much larger scale.

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