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SPECIAL SECTION: GROUND PENETRATING RADAR IN HYDROGEOPHYSICS

Application of Microwave Tomography in Hydrogeophysics: Some Examples

^a Istituto per il Rilevamento Elettromagnetico dell'Ambiente (IREA-CNR), Via Diocleziano 328, I-80124 Napoli, Italy
^b Istituto per i Beni Archeologici e Monumentali (IBAM-CNR), Via per Monteroni, Campus Universitario, 73100 Lecce, Italy
^* Corresponding author (soldovieri.f{at}irea.cnr.it).

Received 30 September 2006.

We have developed a new strategy for indirect measurement of the dielectric permittivity of the soil using ground penetrating radar (GPR) data. In particular, the GPR data are provided as field scattered by a pipe buried in the soil; the scattered field data is collected at the air–soil interface and under a multimonostatic configuration (B-scan). The strategy is based on the use of a microwave tomographic approach that achieves more robust results with respect to the simple calculation of the round-trip time of the signal. Preliminary results are presented with synthetic data, achieved by means of a finite-difference time-domain code, for both the simple case of a pipe buried in a homogeneous soil and the more complicated case of multiple pipes in a layered medium.

Abbreviations: EM, electromagnetic • FDTD, finite-difference time-domain • GPR, ground penetrating radar • TDR, time domain reflectometry • TSVD, truncated singular value decomposition • TWT, two-way time

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				S. Lambot, A. Binley, E. Slob, and S. Hubbard Ground Penetrating Radar in Hydrogeophysics Vadose Zone J., February 25, 2008; 7(1): 137 - 139. [Full Text] [PDF]