3D velocity model and ray tracing of antenna array GPR

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

Research output: Chapter in Book/Report/Conference proceedingConference 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 languageEnglish
Title of host publication2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
Pages4204-4207
Number of pages4
DOIs
Publication statusPublished - 2010 Dec 1
Event2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010 - Honolulu, HI, United States
Duration: 2010 Jul 252010 Jul 30

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)

Other

Other2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
CountryUnited States
CityHonolulu, HI
Period10/7/2510/7/30

Keywords

  • GPR
  • Ground surface topography
  • Ray tracing
  • Velocity estimation
  • Velocity model

ASJC Scopus subject areas

  • Computer Science Applications
  • Earth and Planetary Sciences(all)

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  • Cite this

    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 (pp. 4204-4207). [5651564] (International Geoscience and Remote Sensing Symposium (IGARSS)). https://doi.org/10.1109/IGARSS.2010.5651564