There is disclosed a method of estimating moisture content in a material involving
directing a first frequency (f1) signal and a second frequency (f2)
signal through a material, determining a first absolute phase shift (1)
of the frequency signal and a second absolute phase shift (2)
of the second frequency signal, transforming 1 to a first corrected
absolute phase shift (1c) and 2 to a second
corrected absolute phase shift (2c) in accordance with an expected
relationship between 1 and 2, and estimating
moisture content from 1c and 2c.
