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Proceedings Paper

Vectorial nature of georadar data
Author(s): Frank Lehmann; David Boerner; Klaus Holliger; Alan G. Green
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Paper Abstract

Seismic reflection processing techniques are applied routinely to georadar data. Although similarities exist between radar and seismic wave propagation, there are some significant differences (e.g., the dipole nature of georadar sources, receivers and elemental sources used to represent scattering bodies). To understand better the consequences of recording dipolar wavefields, we simulate a number of multi-component georadar data sets. These simulations are based on a weak scattering approximation, such that point heterogeneities in the subsurface can be represented by infinitesimal dipoles with moments parallel and proportional to the incident georadar wavefields. Since many subsurface structures can be modeled by appropriate suites of infinitesimal dipoles, the simulation results are quite general. On the basis of our simulations, we determine that 'pseudo-scalar' wavefields can be simulated from coincident georadar data sets acquired with two pairs of parallel source-receiver antenna, one oriented perpendicular to the other. Pseudo-scalar georadar data, which are characterized by low degrees of directionality, can be processed confidently using standard seismic processing software. To illustrate the advantages of multi-component georadar data, we combine 3D georadar data sets acquired with dual component source-receiver antenna pairs to form pseudo- scalar wavefield images.

Paper Details

Date Published: 27 April 2000
PDF: 6 pages
Proc. SPIE 4084, Eighth International Conference on Ground Penetrating Radar, (27 April 2000); doi: 10.1117/12.383523
Show Author Affiliations
Frank Lehmann, Swiss Federal Institute of Technology/Zurich (Switzerland)
David Boerner, Geological Survey of Canada (Canada)
Klaus Holliger, Swiss Federal Institute of Technology/Zurich (Switzerland)
Alan G. Green, Swiss Federal Institute of Technology/Zurich (Switzerland)

Published in SPIE Proceedings Vol. 4084:
Eighth International Conference on Ground Penetrating Radar
David A. Noon; Glen F. Stickley; Dennis Longstaff, Editor(s)

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