Computer Science
Scientific paper
Dec 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982rasc...17.1587c&link_type=abstract
Radio Science, vol. 17, Nov.-Dec. 1982, p. 1587-1597.
Computer Science
1
Atmospheric Scattering, Pioneer Venus Spacecraft, Radio Waves, Refracted Waves, Venus Atmosphere, Venus Surface, Atmospheric Effects, Defocusing, Electromagnetic Absorption, Pioneer Space Probes, Radio Echoes, Radio Telemetry, Signal Reflection, Venus, Surface, Refraction, Probes, Observations, Atmosphere, Data, Radio Waves, Pioneer Venus, Absorption, Analysis, Temperature, Winds, Altitude, Photographs, Diagrams, Images, Spectra, Density, Models, Echos
Scientific paper
The telemetry signals from Pioneer Venus probes indicated the strong downward refraction of radio waves. As the probes descended, the strength of the direct signal decreased because of absorption and refractive defocusing. During the last 30 km of descent there was a second measured component in addition to the direct signal. Strong atmospheric reaction is important in strengthening echoes that are scattered toward the earth. Such surface-reflected signals are good indicators of horizontal winds.
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