Digital Soil Mapping Using Drone-Borne Ground-Penetrating Radar
(2022) Instrumentation and Measurement Technologies for Water Cycle Management : Springer Water — ISBN: [9783031082610], p. 417-436, published
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- Abstract
- A drone-based ground-penetrating radar (GPR) is introduced for digital soil mapping in this chapter. The radar system is lightweight and consists of a handheld vector analyzer (VNA), a computer stick, and a differential GPS for positioning. A power bank is used to provide electricity for the whole radar system. A smartphone or tablet controls the radar and GPS measurements remotely. Full-wave inversion is used to retrieve the soil dielectric permittivity from the soil surface reflection, hereby to estimate volumetric soil water content through a petrophysical relation. The radar works in the frequency domain, and data processing is carried out in the time domain to focus on the surface reflection only. A look-up table (LUT) is pre-calculated to reduce the processing time during inversion, formulated as a least-squares problem. Soil moisture maps are generated by kriging interpolation. We present several examples of soil moisture maps produced in agricultural fields in Belgium.
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Citations
Wu, K., & Lambot, S. (2022). Digital Soil Mapping Using Drone-Borne Ground-Penetrating Radar. In Anna Di Mauro et Francesco Soldovieri (red.) (ed.), Instrumentation and Measurement Technologies for Water Cycle Management : Springer Water (p. p. 417-436). Springer Nature. https://doi.org/10.1007/978-3-031-08262-7_17