Frequency-domain Full-waveform Inversion of GPR Data
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 Maxwells 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.
Full-waveform inversion FDFD GPR frequency domain Gauss-Newton method
X.Yang J.van der Kruk J.Bikowski P.Kumbhar G.A.Meles H.Vereecken
Agrosphere, IBG-3, Forschungszentrum Jülich, Jülich, 52425 Germany formerly ETH Zürich, Switzerland, currently Edinburgh University, United Kingdom
国际会议
长沙
英文
344-348
2012-06-15（万方平台首次上网日期，不代表论文的发表时间）