Ground-penetrating radar multi-frequency tomography: a new approach of radar data processing

Summary Standard approaches of ground-penetrating radar tomographies consist in computing velocity tomogram and attenuation tomogram from travel times and amplitudes extracted from electromagnetic signals in the time domain. The multi-frequency tomography is a new inversion processing, based on the use of information extracted from signals in the frequency domain. This method, which takes into account electromagnetic behavior of radar waves in geological medium (such as dispersion and frequency-depend Q-factor), allows to know effective dielectric permittivities of the studied medium. Thus, this approach leads, with support of laboratory measurements of rock dielectric parameters, to identify geological discontinuities.