Standardizing Characterization of Electromagnetic Water Content Sensors: Part 1. Methodology
Utah State University
J.M Blonquist Jr. S.B. Jones D.A. Robinson
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
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.