TY - GEN
T1 - Ground-penetrating radar characterization of water as a function of frequency, salinity and temperature
AU - Jadoon, Khan Zaib
AU - Andre, Frederic
AU - Van Der Kruk, Jan
AU - Slob, Evert
AU - Vereecken, Harry
AU - Lambot, Sebastien
PY - 2011
Y1 - 2011
N2 - We conducted a laboratory experiment to test the ground penetrating radar (GPR) full-waveform forward and inverse modeling approach for electromagnetic wave propagation in water. The GPR system consisted of a vector network analyzer combined with an air-launched, 0.8-2.2 GHz horn antenna, thereby setting up an ultra wideband stepped-frequency continuous-wave radar. The apparent frequency-, salinity-, and temperature-dependent dielectric permittivity and electrical conductivity of water were estimated by using existing electrical models. Using these models, the radar data could be simulated and a remarkable agreement was obtained with the laboratory measurements. Neglecting the frequency-, salinity-, and temperature-effects led to less satisfactory results, especially regarding signal amplitude. Inversion of the radar data permitted to reconstruct the air and water layer thicknesses, and to some extent, the water electrical properties. This analysis particularly showed the benefit of using proper water electrical models compared to commonly used simplified approaches in GPR forward and inverse modeling.
AB - We conducted a laboratory experiment to test the ground penetrating radar (GPR) full-waveform forward and inverse modeling approach for electromagnetic wave propagation in water. The GPR system consisted of a vector network analyzer combined with an air-launched, 0.8-2.2 GHz horn antenna, thereby setting up an ultra wideband stepped-frequency continuous-wave radar. The apparent frequency-, salinity-, and temperature-dependent dielectric permittivity and electrical conductivity of water were estimated by using existing electrical models. Using these models, the radar data could be simulated and a remarkable agreement was obtained with the laboratory measurements. Neglecting the frequency-, salinity-, and temperature-effects led to less satisfactory results, especially regarding signal amplitude. Inversion of the radar data permitted to reconstruct the air and water layer thicknesses, and to some extent, the water electrical properties. This analysis particularly showed the benefit of using proper water electrical models compared to commonly used simplified approaches in GPR forward and inverse modeling.
KW - Ground penetrating radar
KW - complex permittivity of water
KW - full-waveform inversion
KW - multi-layered media
UR - http://www.scopus.com/inward/record.url?scp=80052087511&partnerID=8YFLogxK
U2 - 10.1109/IWAGPR.2011.5963839
DO - 10.1109/IWAGPR.2011.5963839
M3 - Conference contribution
AN - SCOPUS:80052087511
SN - 9781457703331
T3 - 2011 6th International Workshop on Advanced Ground Penetrating Radar, IWAGPR 2011
BT - 2011 6th International Workshop on Advanced Ground Penetrating Radar, IWAGPR 2011
T2 - 2011 6th International Workshop on Advanced Ground Penetrating Radar, IWAGPR 2011
Y2 - 22 June 2011 through 24 June 2011
ER -