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Modeling of Vegetation Permittivity at Microwave Frequencies

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3 Author(s)
Shrestha, B.L. ; Dept. of Electr. Eng., Saskatchewan Univ., Saskatoon, Sask. ; Wood, H.C. ; Sokhansanj, S.

When materials are to be treated with microwaves for different purposes such as drying, online moisture measurements, disinfestation, and remote sensing, thorough knowledge of the material dielectric properties becomes extremely important. Unlike for other materials, measurement of vegetation dielectric properties is very complicated due to the nature of the materials themselves. Hence, vegetation dielectric models that require fewer accurately and easily measurable physical quantities are of great importance. Therefore, dielectric models that only require the measurement of moisture content (MC) have been investigated for alfalfa, a plant material that has high commercial value in national and international markets. The models were developed by measuring the dielectric properties by using an open-ended coaxial probe at frequencies ranging from over 300 MHz to 18 GHz at 22 degC and at an MC ranging from 12% to 73% in wet basis

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Geoscience and Remote Sensing, IEEE Transactions on  (Volume:45 ,  Issue: 2 )