Award

FZJ-2017-06481

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Estimation of subsurface cylindrical object properties from GPR full-waveform inversion

Liu, T.FZJ* ; Klotzsche, A.FZJ* ; Pondkule, M.FZJ* ; Vereecken, H.FZJ* ; van der Kruk, J.FZJ* ; Su, Y.
IEEE Edinburgh

Abstract: Precise radius estimation is of high interest for rebar and pipe characterization but very challenging. In this work, we present a novel 3D frequency-domain full-waveform inversion (FWI) approach with which the geometrical information of subsurface cylindrical objects and the dielectric properties of the penetrating medium are simultaneously extracted from ground penetrating radar (GPR) data. The presented FWI strategy optimizes and updates phase- and amplitude-related model parameters sequentially. The forward modeling step in FWI is accomplished by using gprMax3D. The Shuffled Complex Evolution (SCE) strategy is employed for the optimization procedure. The experiment with synthetic data has provided a precise reconstruction of the initial model.

Keyword(s): Earth, Environment and Cultural Heritage (1st) ; Geosciences (2nd)

Note: Best Student Paper Award at the 9th International Workshop on Advanced Ground Penetrating Radar

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Contributing Institute(s):

1. Agrosphäre (IBG-3)

Research Program(s):

1. 255 - Terrestrial Systems: From Observation to Prediction (POF3-255) (POF3-255)

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