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Strong refraction near the Venus surface - Effects observed by descent probesThe 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.
Document ID
19830031416
Document Type
Reprint (Version printed in journal)
Authors
Croft, T. A. (SRI International Menlo Park, CA, United States)
Date Acquired
August 11, 2013
Publication Date
December 1, 1982
Publication Information
Publication: Radio Science
Volume: 17
Subject Category
LUNAR AND PLANETARY EXPLORATION
Funding Number(s)
CONTRACT_GRANT: NAS2-9125
Distribution Limits
Public
Copyright
Other