TY - GEN
T1 - 3D velocity model and ray tracing of antenna array GPR
AU - Feng, Xuan
AU - Liang, Wenjin
AU - Lu, Qi
AU - Liu, Cai
AU - Li, Lili
AU - Zou, Lilong
AU - Sato, Motoyuki
PY - 2010
Y1 - 2010
N2 - Migration is an important signal processing method that can improve signal-clutter ratio and reconstruct subsurface image. Diffraction stacking migration and Kirchhoff migration sum amplitudes along the migration trajectory, which generally is hyperbolic. But when the ground surface varies acutely, the migration trajectory is not hyperbolic. To computer the migration trajectory need the technique of ray tracing. We introduce a method of ray tracing based on 3D velocity model. Firstly, we build the 3D velocity model depending on the estimation of both ground surface topography and velocities. Then we compute the travel time between transmitter, receiver and each subsurface scattering point, and search the propagation ray depending on the Fermat's principle. The method is tested by an experiment data acquired by the stepped-frequency (SF) CMP antenna GPR system. The target is a metal ball that is buried under a sand mound. A nice result of ray tracing is shown in the case.
AB - Migration is an important signal processing method that can improve signal-clutter ratio and reconstruct subsurface image. Diffraction stacking migration and Kirchhoff migration sum amplitudes along the migration trajectory, which generally is hyperbolic. But when the ground surface varies acutely, the migration trajectory is not hyperbolic. To computer the migration trajectory need the technique of ray tracing. We introduce a method of ray tracing based on 3D velocity model. Firstly, we build the 3D velocity model depending on the estimation of both ground surface topography and velocities. Then we compute the travel time between transmitter, receiver and each subsurface scattering point, and search the propagation ray depending on the Fermat's principle. The method is tested by an experiment data acquired by the stepped-frequency (SF) CMP antenna GPR system. The target is a metal ball that is buried under a sand mound. A nice result of ray tracing is shown in the case.
KW - GPR
KW - Ground surface topography
KW - Ray tracing
KW - Velocity estimation
KW - Velocity model
UR - http://www.scopus.com/inward/record.url?scp=78650895829&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78650895829&partnerID=8YFLogxK
U2 - 10.1109/IGARSS.2010.5651564
DO - 10.1109/IGARSS.2010.5651564
M3 - Conference contribution
AN - SCOPUS:78650895829
SN - 9781424495658
SN - 9781424495665
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 4204
EP - 4207
BT - 2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
Y2 - 25 July 2010 through 30 July 2010
ER -