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Earth-based remote sensing of planetary surfaces and atmospheres at radio wavelengthsTwo reasons for remote sensing from the Earth are given: (1) space exploration, particularly below the surfaces or underneath cloud layers, is limited to only a very few planets; and (2) a program of regular monitoring, currently impractical with a limited number of space probes, is required. Reflected solar and nonthermal radiation are discussed. Relativistic electrons, trapped in large magnetospheres on Saturn and Jupiter, are discussed. These electrons produce synchrotron radiation and also interact with the ionosphere to produce bursts of low frequency emission. Because most objects are black-bodies, continuum radiometry is emphasized. Spectroscopic techniques and the measurement of nonthermal emission are also discussed.
Document ID
19820010230
Document Type
Contractor Report (CR)
Authors
Dickel, J. R.
(Illinois Univ. Urbana, IL, United States)
Date Acquired
September 4, 2013
Publication Date
January 1, 1982
Subject Category
Lunar And Planetary Exploration
Report/Patent Number
NASA-CR-168414
Accession Number
82N18104
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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