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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...
In this paper, a Discontinuous Galerkin Time-Domain (DGTD) method is used to model full Ground Penetrating Radar (GPR) scenarios. The bi-static GPR is made of two identical Vivaldi antennas, which are accurately modeled in front of a sand box in order to detect and localize some buried objects. Our approach is validated by comparison with either synthetic data provided by CST-MWS or experimental data...
In many applications, such as Eddy-Current Testing (ECT), we are often interested in the joint model choice and parameter estimation. Nested Sampling (NS) is one of the possible methods. The key step that reflects the efficiency of the NS algorithm is how to get samples with hard constraint on the likelihood value. This contribution is based on the classical idea where the new sample is drawn within...
Eddy-current nondestructive testing is widely used to detect defects within a metal structure. It is also useful to characterize their location and shape provided that proper maps of variations of impedance that the defects induce are available. Imaging of void defects in the wall of a hollow, nonmagnetic metal tube, is performed herein by controlled evolution of level sets. Such data are variations...
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