Physics
Scientific paper
Aug 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980aiasj..18...24n&link_type=abstract
AIAA Student Journal, vol. 18, Summer 1980, p. 24-29.
Physics
Pioneer Venus Spacecraft, Planetary Mapping, Radar Maps, Venus Radar Echoes, Eccentric Orbits, Equatorial Atmosphere, Radar Antennas, Radio Altimeters, Reflectance, Spaceborne Photography, Surface Roughness, Topography, Venus Atmosphere, Venus Surface
Scientific paper
Data obtained from the Pioneer Venus radar mapper experiment are discussed. The mission was primarily developed to study the atmosphere of Venus. A highly eccentric orbit (eccentricity of 0.84, period of 24 h) was selected. The instrumentation has two operating modes: altimetry and imaging. Three parameters were measured for every radar spot size: altitude, surface roughness and radar reflectivity at a normal incidence. The measurements have been extended to a topographic map. The results suggest that the Beta region consists of two large shields and that the equatorial region is dominated by Aphrodite Terra. It also appears that the surface of Venus is very smooth and that it lacks great basins and the global plate tectonics present on earth.
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