Earth-based radar studies of planetary surfaces and atmospheres

Details Earth-based radar studies of planetary surfaces and atmospheres Earth-based radar studies of planetary surfaces and atmospheres

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982itgrs..20..293j&link_type=abstract

(IEEE, AGU, NASA, et al., International Geoscience and Remote Sensing Symposium on Recent Advances in Remote Sensing, 1st, Washi

Astronomy and Astrophysics

Astronomy

2

Astronomical Observatories, Planetary Atmospheres, Planetary Surfaces, Radar Imagery, Remote Sensing, Solar System, Backscattering, Bistatic Reflectivity, Galilean Satellites, Ground Stations, Instrument Errors, Lunar Exploration, Lunar Surface, Polarization Characteristics

Scientific paper

Remote sensing of solar system bodies using the JPL Goldstone facility and the radio telescope at Arecibo to characterize the surfaces of the objects is described in terms of present and planned studies. Moon observations proceed at wavelengths from 8.6 mm to 20 m, and are nominally in the centimeter range. Cross sections available from the radar data and apparatus are discussed, noting the practice of using backscattered signals to define the shape of terrain. A review is presented of polarization properties models of the moon's surface, and the design of an experiment using a spacecraft with bistatic radar to determine the dielectric constant of the moon's surface is outlined. Radar is noted to have been used to characterize the rotation period of Mercury, the absorption profile and the topography of Venus, and aided in choosing a landing site for the Viking spacecraft. The existence of higher-than-expected polarization near the Galilean satellites is mentioned as an unexplained phenomenon.

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