Roughness of the Venus surface according to bistatic-radar data

Astronomy and Astrophysics – Astronomy

Scientific paper

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Multistatic Radar, Radar Astronomy, Venus Radar Echoes, Bistatic Reflectivity, Random Processes, Surface Roughness, Terrain Analysis, Venera 10 Satellite, Venus Surface

Scientific paper

The roughness parameters (C and gamma) of two regions of the Venus surface were determined from Venera-10 bistatic-radar data. In these regions, the mean-square angles of the inclinations of random irregularities of the surface were found to vary in the range 0.5-1.1 deg. An analysis of reflected signals reveals spectra with an appreciable coherent component. For the region with 217.7-219.4 deg longitude and -25.3 to -24.8 deg latitude, fluctuations of terrain height are determined which are associated with the effect of random irregularities, varying in the range 20-30 cm over horizontal distances of 30-300 m.

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