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This letter discusses about an improved permittivity probe calibration method for calculating the complex permittivity of soils from reflection data over a very wide bandwidth. The accuracy of this method is demonstrated using reflection data collected from a unique wideband (10–1000 MHz) permittivity probe specifically designed for quick in situ permittivity measurements of soils at different depths...
A novel coaxial probe is developed for measuring complex permittivity of soils in-situ from 10 to 1000 MHz without taking soil samples. The dielectric constant and conductivity of soil is derived from step-frequency reflection taken inside a small freshly bored hole. As a result, permittivity at various depths with in-situ moisture content and soil texture can be obtained in the fields. A novel permittivity...
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