Research Synopsis

Standardizing Characterization of Electromagnetic Water Content Sensors: Part 1. Methodology

Utah State University

J.M Blonquist Jr. S.B. Jones D.A. Robinson --November, 2005
Transmission line-type electromagnetic (EM) methods for estimat- ing soil volumetric water content have advanced significantly in recent years, with many sensing systems now available. EM systems make use of the dependence of soil dielectric permittivity shift). However, a standard method for characterizing and comparing make accurate EM signal property measurements that EM system measurement capability has not been established. Our ob- jective was to evaluate the permittivity measurement ability of seven different EM sensing systems using readily available media.

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