Fast evaluation of zero?offset Green's function for layered media with application to ground?penetrating radar

Lambot, S.; Slob, E.C.; Vereecken, H.

doi:doi:10.1029/2007GL031459

Fast evaluation of zero?offset Green's function for layered media with application to ground?penetrating radar

Title

Fast evaluation of zero?offset Green's function for layered media with application to ground?penetrating radar

Author

Lambot, S.
Slob, E.C.
Vereecken, H.

Faculty

Civil Engineering and Geosciences

Department

Geotechnology

Date

2007-11-14

Abstract

We propose an efficient integration path for the fast evaluation of the three?dimensional spatial?domain Green's function for electromagnetic wave propagation in layered media for the particular case of zero?offset, source?receiver proximal ground?penetrating radar (GPR) applications. The integration path is deformed in the complex plane of the integration variable k? so that the oscillations of the dominant exponential term in the spectral Green's function are minimized. The contour does not need to be closed back on the real k? axis as the complex integrand rapidly damps. The accuracy and efficiency of the technique have been confirmed by comparison with traditional elliptic integration contours. The proposed algorithm appears to be promising development for fast, full?wave modeling and inversion of GPR data

Subject

ground-penetrating radar
layered media
Green's function

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DOI

https://doi.org/10.1029/2007GL031459

Publisher

American Geophysical Union

ISSN

0094-8276

Source

http://europa.agu.org/?view=article&uri=/journals/gl/gl0721/2007GL031459/2007GL031459.xml