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Lots of studies, some of them very recent, have demonstrated that a proper electromagnetic field exposure of seeds and sown can bring to an improvement of germination and growth indices. This phenomenon applied to agriculture can be extremely helpful in increasing raw materials productivity. The present work consist of an analysis of the scientific literature on the potential applications of ELF fields...
This paper presents two electromagnetic simulators based on the Finite-Difference Time Domain (FDTD) technique and Boundary Element Method (BEM), for Ground Penetrating Radar applications. The first simulator is the new open-source version of the software gprMax, which employs Yee's algorithm to solve Maxwell's equations by using the FDTD method and includes advanced features allowing the accurate...
In this paper the imaging of Ground Penetrating Radar (GPR) scenario via Kirchhoff migration (KM) method is seen as a validation of the controlled experimental data and as a first step toward more elaborate imaging techniques. One of our goals is to have the possibility to acquire experimental data in a controlled laboratory environment. The bi-static GPR data is then acquired and validated by comparison...
This work aims at offering an overview on the scientific results stemming from a selection of three Short-Term Scientific Missions (STSMs) carried out in 2016 and funded by the COST Action TU1208 “Civil Engineering Applications of Ground Penetrating Radar.” The research activities focused on the development and use of electromagnetic modelling and inversion techniques for Ground Penetrating Radar...
An innovative ground penetrating radar (GPR) inverse scattering (IS) methodology for imaging sparse buried objects is proposed. The developed methodology integrates a customized Bayesian compressive sensing (BCS) solver within a frequency hopping (FH) strategy in order to (i) regularize the IS problem by enforcing sparsity priors on the unknown scatterers as well as to (ii) exploit the multi-chromatic...
An advanced imaging procedure for Ground Penetrating Radar (GPR) operating in contactless configuration, i.e., when data are collected at a certain distance from the air-soil interface, is proposed in this contribution. The algorithm is based on an advanced implementation of a microwave tomographic approach recently proposed by the authors, which is capable of accounting for the near-field distribution...
Interaction of an un ultra-wideband source with buried cylinders is solved with a time-domain formulation of the Cylindrical Wave Approach. The pulsed excitation typical of remote sensing with the Ground Penetrating Radar can be implemented, i.e., the Gaussian monocycle or Gaussian doublet waveforms. The analysis is developed in the frequency domain, and spectra of the scattered field contributions...
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