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Measurement Of Soil Moisture By Attenuation Of A Vertically Polarized Radio Wave, Arlo D. Mickelsen
Measurement Of Soil Moisture By Attenuation Of A Vertically Polarized Radio Wave, Arlo D. Mickelsen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The purpose of this thesis is to determine feasibility and to investigate some of the problems encountered in making soil moisture measurements using radio wave propagation. The procedure consists of propagating a vertically polarized wave over the earth and measuring the field strength attenuation. A brief summary of present methods of measuring soil moisture is given.
Certain aspects of radio wave propagation theory are discussed, covering such topics as the surface wave, the space wave, the skin depth, and the effect of the dielectric constant on radio wave propagation. Based on this theory, measurement parameters such as frequency, antenna separation, …