Soil water measurement by ground penetrating radar and its scale features
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Abstract:
Multi-scale observation and simulation of soil water is a hot research topic worldwide. Ground penetrating radar (GPR), as a modern technology for measuring soil water content, has filled in the scale gap between the traditional measuring method and the remote sensing method. Domestic and foreign research has showed that GPR is highly precise and fast for the measurement of soil water content, and does not destroy the soil structure. As a field-scale measurement method, it plays a unique role in determining the spatial distribution of meso- and micro-scale soil water at the depth of 0.05 m to 50 m. GPR has more advantages than TDR in precision verification and calibration of remote sensing retrieval model for soil water, and has the potential to be applied in remote sensing product validation and other hydrological applications. This paper can provide theoretical reference for related research and promotion of soil water measurement method by GPR.
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