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    • Soil Properties
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    • Soil Moisture and Irrigation
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    • Sensor Accuracy
    • Soil Sensor Calibration
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Frequency Domain Reflectometry

Frequency Domain Reflectometry (FDR) / Capacitance (Frequency)

Leave a Comment / Soil moisture measurement methods / By Eric Embacher

Capacitance can be measured from the change in frequency of a reflected radio wave or resonance frequency (Kelleners 2004). This method of measurement uses an oscillator to propagate an electromagnetic signal through a metal tine or other wave guide. The difference between the output wave and the return wave frequency is measured to determine soil …

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