Computer Science
Scientific paper
Dec 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...88..407h&link_type=abstract
Icarus (ISSN 0019-1035), vol. 88, Dec. 1990, p. 407-417. Research supported by NASA.
Computer Science
116
Backscattering, Callisto, Coherent Scattering, Europa, Ganymede, Radar Scattering, Circular Polarization, Icy Satellites, Multistatic Radar, Polarized Radiation, Saturn Rings, Spectral Reflectance
Scientific paper
It is presently suggested that the diffuse component-dominated high radar reflectivities and large polarization of Europa, Ganymede, and Callisto could be due to the illumination by a collimated source of a weakly absorbing particulate medium in which wavelength-scaled scatterers are separated by distances somewhat larger than the wavelength. A plausible medium could be a regolith composed of voids and/or silicate rocks imbedded in an icy matrix; multiply-scattered parts of the wavefront traversing the same path in opposite directions combine coherently in the backscatter direction to generate increased intensity, and the enhancement is different for the two components of polarized reflected radiation.
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