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http://hdl.handle.net/2122/724
Authors: | Carcione, J. M.* Feliciangeli, L. P.* Zamparo, M.* |
Title: | The exploding-reflector concept for ground-penetrating-radar modeling | Issue Date: | 2002 | Series/Report no.: | 3-4/45 (2002) | URI: | http://hdl.handle.net/2122/724 | Keywords: | exploding reflector zero-offset section GPR modeling |
Subject Classification: | 04. Solid Earth::04.02. Exploration geophysics::04.02.04. Magnetic and electrical methods | Abstract: | The simulation of a stacked radargram requires the calculation of a set of common-source experiments and application of the standard processing sequence. To reduce computing time, a zero-offset stacked section can be obtained with a single simulation, by using the exploding-reflector concept and the so-called non-reflecting wave equation. This non-physical modification of the wave equation implies a constant impedance model to avoid multiple reflections, which are, in principle, absent from stacked sections and constitute unwanted artifacts in migration processes. Magnetic permeability is used as a free parameter to obtain a constant impedance model and avoid multiple reflections. The reflection strength is then implicit in the source strength. Moreover, the method generates normal-incidence reflections, i.e. those having identical downgoing and upgoing wave paths.Exploding reflector experiments provide correct travel times of diffraction and reflection events, in contrast to the plane-wave method. |
Appears in Collections: | Annals of Geophysics |
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