| 摘要 |
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 (.PHI.1) of said first frequency signal and a second absolute phase shift (.PHI.2) of said second frequency signal, transforming .PHI.1 to a first corrected absolute phase shift (.PHI.1c) and .PHI.2 to a second corrected absolute phase shift (.PHI.2c) in accordance with an expected relationship between .PHI.1 and .PHI.2, and estimating moisture content from .PHI.1c and .PHI.2c.
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