Possible applications of time domain reflectometry in planetary exploration missions

Details Possible applications of time domain reflectometry in planetary exploration missions Possible applications of time domain reflectometry in planetary exploration missions

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apg..book..545h&link_type=abstract

In NASA, Washington Advan. in Planetary Geol. p 545-555 (SEE N83-12006 02-91)

Physics

Planetary Surfaces, Reflectometers, Soil Moisture, Moisture Content, Permafrost, Permittivity, Space Exploration, Transmission Lines

Scientific paper

The 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.

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