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Plasma density mapping in the solar wind through use of VHF radio to measure electron contentHow the electron content between the Solar probe and the earth can be observed with a minimum of equipment and give a quantitative rationale for the use of a signal near 400 MHz to supplement the telecommunications signal is described. The emphasis is on the method of making content observations and on their value. While far from the Sun, the electron content is so low that the S-X dual-frequency system is insufficiently sensitive and a UHF system is optimum. As the probe approaches the Sun, the UHF may be disrupted by scintillation and the variations of the telecommunications signal must be used for the content measurement. By operating the suggested system in different modes as the solar distance changes, operation during the entire mission is possible.
Document ID
19780025053
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Croft, T. A.
(SRI International Corp. Menlo Park, CA, United States)
Date Acquired
August 9, 2013
Publication Date
September 1, 1978
Publication Information
Publication: JPL A Close-up of the Sun
Subject Category
Solar Physics
Accession Number
78N32996
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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