3D velocity model and ray tracing of antenna array GPR

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

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

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.

本文言語English
ホスト出版物のタイトル2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
ページ4204-4207
ページ数4
DOI
出版ステータスPublished - 2010 12 1
イベント2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010 - Honolulu, HI, United States
継続期間: 2010 7 252010 7 30

出版物シリーズ

名前International 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

ASJC Scopus subject areas

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

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