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Proceedings Paper

Multicomponent imaging of different objects with different strike orientations
Author(s): Jan van der Kruk; J. H. Zeeman; Jeroen Groenenboom
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Paper Abstract

For electromagnetic imaging of ground-penetrating radar ( GPR) data, the vectorial character of the electromagnetic field and the radiation characteristics of the source and the receiver play an important role. A new multicomponent imaging algorithm has been developed that takes into account these properties. This imaging algorithm employs four source-receiver configurations to obtain a bounded imaging operator. Measurements with the four possible source-receiver configurations, two copolarized and two cross-polarized, have been made across a sandbox in which variously oriented linear objects and metal spheres were buried. Essentially, electric wavefields with two electromagnetic polarizations were emitted and electric fields with the two possible scattered polarizations were measured. An automated measurement frame was used to acquire data with high positioning accuracy. Analysis of the images derived for each of the four individual data sets showed that the cross-polarized data contained useful information. The images of a horizontal pipe oriented 45° with respect to the survey lines, were almost identical for the two co-polarized configurations, as well as for the two cross-polarized configurations. A 25% increase in amplitude and a slightly improved horizontal resolution were obtained by adding the cross-polarized images to the co-polarized ones.

Paper Details

Date Published: 12 April 2002
PDF: 6 pages
Proc. SPIE 4758, Ninth International Conference on Ground Penetrating Radar, (12 April 2002); doi: 10.1117/12.462281
Show Author Affiliations
Jan van der Kruk, Swiss Federal Institute of Technology (Switzerland)
J. H. Zeeman, Delft Univ. of Technology (Netherlands)
Jeroen Groenenboom, Delft Univ. of Technology (Netherlands)


Published in SPIE Proceedings Vol. 4758:
Ninth International Conference on Ground Penetrating Radar
Steven Koppenjan; Hua Lee, Editor(s)

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