Characteristics of the surface and features of the propagation of radio waves in the atmosphere of Venus from data of bistatic radiolocation experiments using Venera 9 and 10 satellites

Details Characteristics of the surface and features of the propagation of radio waves in the atmosphere of Venus from data of bistatic radiolocation experiments using Venera 9 and 10 satellites Characteristics of the surface and features of the propagation of radio waves in the atmosphere of Venus from data of bistatic radiolocation experiments using Venera 9 and 10 satellites

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981icar...48..188k&link_type=abstract

Icarus, vol. 48, Nov. 1981, p. 188-200.

Physics

3

Bistatic Reflectivity, Planetary Mapping, Planetary Surfaces, Radio Echoes, Venus Atmosphere, Venus Radar Echoes, Atmospheric Attenuation, Doppler Effect, Satellite Observation, Venera 10 Satellite, Venera 9 Satellite, Wave Propagation, Venus, Radio Waves, Atmosphere, Venera Missions, Surface, Attenuation, Diagrams, Spacecraft Observations, Calculations, Reflectivity, Density, Maps, Roughness, Refraction, Radio Methods, Dielectric Properties

Scientific paper

Bistatic radiolocation experiments to map the terrain of Venus are reported. Selected regions of the planet surface were illuminated by signals at wavelength of 32 cm by an orbiting satellite and reflected back to receivers on earth, while a second beam from the satellite was sent directly to earth and did not penetrate the atmosphere. Doppler frequency differences between the received signals were due to a reflected angle off the surface, and defined the slope of the illuminated terrain. The signal analysis procedures to remove errors are discussed, and the acquisition of maps on the distribution of reflectivity and the characteristics of relief for two areas are presented. Measurements of the refraction angle and the refraction attenuation of radio waves were found to be in good agreement with the Venus atmospheric parameters sensed by the Venera 9 and 10 landers.

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