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An empirical spectral bandwidth model for superior conjunctionThe downlink signal from spacecraft in superior solar conjunction phases suffers a great reduction in signal-to-noise ratio. Responsible in large part for this effect is the line broadening of the signal spectrum. An analytic empirical expression was developed for spectral bandwidth as a function of heliocentric distance from 1 to 20 solar radii. The study is based on spectral broadening data obtained from the superior conjunctions of Helios 1 (1975), Helios 2 (1976), and Pioneer 6 (1968). The empirical fit is based in part on a function describing the electron content in the solar corona.
Document ID
Document Type
Rockwell, R. S.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 9, 2013
Publication Date
February 15, 1978
Publication Information
Publication: The Deep Space Network
Subject Category
Communications And Radar
Distribution Limits
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19780016244Analytic PrimaryThe deep space network
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