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Possible applications of time domain reflectometry in planetary exploration missionsThe use of a time domain reflectometer (TDR) for planetary exploration is considered. Determination of the apparent dielectric constant and hence, the volumetric water content of frozen and unfrozen soils using the TDR is described. Earth-based tests were performed on a New York state sandy soil and a Wyoming Bentonite. Use of both a cylindrical coaxial transmission line and a parallel transmission line as probes was evaluated. The water content of the soils was varied and the apparent dielectric constant measured in both frozen and unfrozen states. Advantages and disadvantages of the technique are discussed.
Document ID
19830003755
Document Type
Reprint (Version printed in journal)
Authors
Heckendorn, S.
(State Univ. of New York Buffalo, NY, United States)
Date Acquired
August 11, 2013
Publication Date
September 1, 1982
Publication Information
Publication: NASA, Washington Advan. in Planetary Geol.
Subject Category
Lunar And Planetary Exploration
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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