In this article the problem of detecting and localizing buried objects in a two-dimensional half-space geometry starting from the knowledge of the scattered field, at the, air-soil interface is explored. In particular , the aim of the article is to give insight to the role played by the law of variation the power radiated by the transmitting antenna depending on the operating frequency and on the positions of the transmitting and receiving antennas. A suitable choice of the excitation law of the source is given in order, to permit. the reconstruction of the lower spatial harmonic components of the unknown object. This is performed by means of an analysis based on the Singular Value Decomposition (SVD) tool, which also makes it possible to achieve a stable solution. Numerical examples show how the power can be used in a suitable fashion, improving the "quality" in terms of examples localization and of reconstruction of the geometry of the object. Finally, reconstruction results from experimental data for subsurface cavities detection and localization are shown.
Effects of the Radiated Power in a Linear Inverse Scattering algorithm for GPR Prospecting: numerical results
Persico R;Soldovieri F
2005
Abstract
In this article the problem of detecting and localizing buried objects in a two-dimensional half-space geometry starting from the knowledge of the scattered field, at the, air-soil interface is explored. In particular , the aim of the article is to give insight to the role played by the law of variation the power radiated by the transmitting antenna depending on the operating frequency and on the positions of the transmitting and receiving antennas. A suitable choice of the excitation law of the source is given in order, to permit. the reconstruction of the lower spatial harmonic components of the unknown object. This is performed by means of an analysis based on the Singular Value Decomposition (SVD) tool, which also makes it possible to achieve a stable solution. Numerical examples show how the power can be used in a suitable fashion, improving the "quality" in terms of examples localization and of reconstruction of the geometry of the object. Finally, reconstruction results from experimental data for subsurface cavities detection and localization are shown.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
