Frequency-domain Full-waveform Inversion of GPR Data

X. Yang, J. van der Kruk, J. Bikowski, P. Kumbhar, G. A. Meles, H. Vereecken

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We assess a new full-waveform inversion scheme to obtain high-resolution images of the subsurface for cross-hole ground penetrating radar (GPR) data. The inversion is formulated as a non-linear least squares problem which minimizes the misfit between synthetic and observed data. In contrast to existing full-waveform inversions for GPR data, the new approach is implemented in frequency domain using the finite-difference (FDFD) solution of Maxwell's equations. Here, we use an iterative gradient method (Gauss-Newton) to simultaneously obtain permittivity and conductivity distributions. The new scheme is applied to a synthetic example which exhibits anomalous inclusion within a homogeneous background. The results of the frequency domain approach are comparable to time domain full-waveform inversion results. The new scheme requires less computational time but more memory.

Original languageEnglish
Title of host publicationNEAR-SURFACE GEOPHYSICS AND ENVIRONMENT PROTECTION
EditorsJ Liu, Y Xu, Q Dai, D Zhu, R Guo, D Feng, J Yan, H Liu, Tong, D Zhang, D Li
Place of PublicationMONMOUTH JUNCTION,
PublisherSCIENCE PRESS USA INC
Pages344-348
Number of pages5
Publication statusPublished - 2012
Event5th International Conference on Environmental and Engineering Geophysics (ICEEG) - The Central South University, Changsha, China
Duration: 15 Jun 201218 Jun 2012

Conference

Conference5th International Conference on Environmental and Engineering Geophysics (ICEEG)
CountryChina
CityChangsha
Period15/06/1218/06/12

Keywords

  • Full-waveform inversion
  • FDFD
  • GPR
  • frequency domain
  • Gauss-Newton method
  • CROSSHOLE RADAR DATA
  • APERTURE SEISMIC DATA
  • COMPLEX STRUCTURES
  • TIME
  • TOMOGRAPHY
  • ALGORITHM

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