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Keywords = bifilar probe

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13 pages, 3142 KB  
Article
A Method for Extracting Debye Parameters as a Tool for Monitoring Watered and Contaminated Soils
by Andrea Cataldo, Iman Farhat, Lourdes Farrugia, Raffaele Persico and Raissa Schiavoni
Sensors 2022, 22(20), 7805; https://doi.org/10.3390/s22207805 - 14 Oct 2022
Cited by 14 | Viewed by 2935
Abstract
Soil monitoring is a key topic from several perspectives, such as moisture level control for irrigation management and anti-contamination purposes. Monitoring the latter is becoming even more important due to increasing environmental pollution. As a direct consequence, there is a strong demand for [...] Read more.
Soil monitoring is a key topic from several perspectives, such as moisture level control for irrigation management and anti-contamination purposes. Monitoring the latter is becoming even more important due to increasing environmental pollution. As a direct consequence, there is a strong demand for innovative monitoring systems that are low cost, provide for quasi-real time and in situ monitoring, high sensitivity, and adequate accuracy. Starting from these considerations, this paper addresses the implementation of a microwave reflectometry based-system utilizing a customized bifilar probe and a miniaturized Vector Network Analyzer (m-VNA). The main objective is to relate frequency-domain (FD) measurements to the features of interest, such as the water content and/or the percentage of some polluting substances, through an innovative automatable procedure to retrieve the Debye dielectric parameters of the soil under different conditions. The results from this study confirm the potential of microwave reflectometry for moisture monitoring and contamination detection. Full article
(This article belongs to the Collection Dielectric Sensing-Based Systems and Applications)
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