3D velocity model and ray tracing of antenna array GPR

Xuan Feng; Wenjin Liang; Qi Lu; Cai Liu; Lili Li; Lilong Zou; Motoyuki Sato

doi:10.1109/IGARSS.2010.5651564

3D velocity model and ray tracing of antenna array GPR

Xuan Feng, Wenjin Liang, Qi Lu, Cai Liu, Lili Li, Lilong Zou, Motoyuki Sato

Department of Basic Studies

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

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.

Original language	English
Title of host publication	2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
Pages	4204-4207
Number of pages	4
DOIs	https://doi.org/10.1109/IGARSS.2010.5651564
Publication status	Published - 2010 Dec 1
Event	2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010 - Honolulu, HI, United States Duration: 2010 Jul 25 → 2010 Jul 30

Publication series

Name	International Geoscience and Remote Sensing Symposium (IGARSS)

Other

Other	2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
Country	United States
City	Honolulu, HI
Period	10/7/25 → 10/7/30

Keywords

GPR
Ground surface topography
Ray tracing
Velocity estimation
Velocity model

ASJC Scopus subject areas

Computer Science Applications
Earth and Planetary Sciences(all)

Access to Document

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3D velocity model and ray tracing of antenna array GPR. / Feng, Xuan; Liang, Wenjin; Lu, Qi; Liu, Cai; Li, Lili; Zou, Lilong; Sato, Motoyuki.

2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010. 2010. p. 4204-4207 5651564 (International Geoscience and Remote Sensing Symposium (IGARSS)).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Feng, X, Liang, W, Lu, Q, Liu, C, Li, L, Zou, L & Sato, M 2010, 3D velocity model and ray tracing of antenna array GPR. in 2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010., 5651564, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 4204-4207, 2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010, Honolulu, HI, United States, 10/7/25. https://doi.org/10.1109/IGARSS.2010.5651564

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abstract = "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.",

keywords = "GPR, Ground surface topography, Ray tracing, Velocity estimation, Velocity model",

author = "Xuan Feng and Wenjin Liang and Qi Lu and Cai Liu and Lili Li and Lilong Zou and Motoyuki Sato",

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AU - Liang, Wenjin

AU - Lu, Qi

AU - Liu, Cai

AU - Li, Lili

AU - Zou, Lilong

AU - Sato, Motoyuki

PY - 2010/12/1

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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

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