Abdellah Driouach

Modelling and Simulation Resolution of Ground-Penetrating Radar Antennas

The problem of resolution in antenna ground-penetrating radar (GPR) is very important for the investigation and detection of buried targets. We should solve this problem with software or a numeric method. The purposes of this paper are the modelling and simulation resolution of antenna radar GPR using three antennas, arrays (as in the software REFLEXW), the antenna dipole (as in GprMax2D), and a bow-tie antenna (as in the experimental results). The numeric code has been developed for study resolution antennas by scattered electric fields in mode B-scan. Three frequency antennas (500, 800, and 1,000 MHz) have been used in this work. The simulation results were compared with experimental results obtained by Rial and colleagues under the same conditions.

Simulation effect of polarization of targets on the Ground Penetrating Radar response

The aim of this paper is to simulate the detection of buried objects under surfaces and the influence of its orientation on the GPR response. The most important problems facing the users of GPR are the difficulties of analyzing the obtained radargrams, which we tried to solve by creating some models to help them distinguish between the types of orientations of the buried objects, its number and nature from the radargrams. The simulations we have established include the following items: a metal and plastic bars have led us to find that the electromagnetic waves are very sensitive to the variations of the orientation of the targets (the change of the angle between antenna and the targets) they are also very sensitive to the Change of dielectric permittivity and electrical conductivity. The accuracy of the results of this simulation was determined after a comparison with a simulation resulted by GprMax2d under the same conditions.

Simulation of ground penetrating radar imaging under subsurface

This paper is devoted to study the propagation of electromagnetic waves of ground radar (GPR) in geological environments (heterogeneous). GPR is a method based on the analyze of spread the diffraction and reflection electromagnetic waves in high frequency (0.1 MHz to 2.6 GHz). A number of models have been designed to simulate the varieties of geological conditions. FDTD one of these models, which based on the scientific computing software called Reflexw simulation code. During the signal radar spread from the geological environment. We note that the signal decreases due to the absorption phenomenon and reflection. Our results show that the effective permittivities have a great impact on the wave behavior in different geological environments.

Case study: GPR survey at the archaeological Roman site of Ciavieja, El Ejido (Spain)

This paper describes the ground penetrating radar (GPR) survey performed on the archaeological site of Ciavieja, El Ejido (Spain). It is part of historical studies performed in Ciavieja in order to add information to previous studies and also to analyze the extent and importance of the remains buried in this site. The objective of the GPR survey was to locate the most promising areas within the archaeological site to help the architects and archaeologists with an optimal design for the park. The time slices built with the radar data show several locations with linear and square anomalies with sizes compatible with the ones of Roman walls or roman house rooms.

GPR survey at the archaeological roman site of Ciavieja, El Ejido (Spain)

This paper describes the ground penetrating radar (GPR) survey performed on the archaeological site of Ciavieja, El Ejido (Spain). It is part of historical studies performed in Ciavieja in order to add information to previous studies and also to analyze the extent and importance of the remains buried in this site. The objective of the GPR survey was to locate the most promising areas within the archaeological site to help the architects and archaeologists with an optimal design for the park. The time slices built with the radar data show several locations with linear and square anomalies with sizes compatible with the ones of Roman walls or roman house rooms.