Soil moisture variability effect on GPR data

Author

Ardekani, M.R. ; Neyt, X. ; Benedetto, D. ; Slob, Evert ; Wesemael, B. ; Bogaert, P. ; Craeye, Christophe ; Lambot, Sebastien

Author_Institution

Earth & Life Inst., Univ. catholique de Louvain, Louvain-la-Neuve, Belgium

fYear

2014

fDate

June 30 2014-July 4 2014

Firstpage

214

Lastpage

217

Abstract

In this paper the effect of local variability of soil moisture within the antenna footprint on GPR data is studied. A combination of GprMax3D with GPR full-wave model of Lambot and André (2013) is used for an errorless set of measurements. The GprMax3D simulations are used as real GPR measurements regarding several physical-based configurations. The Greens functions of the simulated data are extracted using calibrations based on GPR full-wave models. The inversion results of horizontal local soil moisture variability focusing on the surface wavelet reflection are compared with the averaged soil moisture values within different antenna footprints which led to the antenna footprint of -9 dB as the best. Finally, the inversion results of the vertical soil moisture variability shows significant effect of shallow soil moisture layering on the GPR-retrieved soil moisture values, which is highly correlated to the antenna height from the ground surface.

Keywords

Green´s function methods; ground penetrating radar; moisture; radar antennas; radar signal processing; soil; Andre model; GPR data; GPR full wave model; GPR measurement; GprMax3D; Greens function; Lambot model; antenna footprint; ground surface; physical based configuration; soil moisture variability; Antennas; Compaction; Ground penetrating radar; Lead; Measurement uncertainty; Moisture measurement; Surface waves; GprMax3D; Ground-penetrating radar; full-wave inversion; spatial soil moisture variability;

fLanguage

English

Publisher

ieee

Conference_Titel

Ground Penetrating Radar (GPR), 2014 15th International Conference on

Conference_Location

Brussels

Type

conf

DOI

10.1109/ICGPR.2014.6970416

Filename

6970416