Improving the sensitivity detection for underground region

Ground penetrating radar is a technique wich offers a way of viewing shallow soil. The areas of application for geophysical radar are divers and the associated electromagnetic phenomenology has been investigated for detecting targets buried within a realistic model ground environment. The continuous backscatter of field from soil gives rise to clutter, which limits the contrast of near-surface underground target reflections and, therefore, decreases the detection sensitivity of the radar. In this paper, a novel detection scheme is introduced in order to improve the detection sensitivity. This new approach is based on a frequency modulation by a micro-wave signal. (C) 2000 Academie des sciences/Editions scientifiques et medicales Elsevier SAS.