3D subsurface visualization by suppressing ground reflection and direct wave with bistatic GPR

Naoki Hayashi, Motoyuki Sato

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A ground reflection and a direct wave which propagates directory from a transmitting antenna to a receiving antenna are often arisen as issues especially for a ground penetrating radar (GPR) to monitor a near-surface region. In this paper a 3D subsurface radar image by suppressing those components with a bistatic GPR system is presented. A relative permittivity of a ground surface is measured at the beginning, and a Brewster angle is estimated from that value. Then, the transmitting antenna is located to match an incident angle with the Brewster angle. In this case, the ground reflection does not occur, and all the energy penetrates into the ground. The direct wave is suppressed with an f-k filter which works automatically from position information of the antennas. An experimental result gives the 3D subsurface image without the ground reflection and the direct wave under a condition that a landmine model is buried at a depth of 10cm in a dry sand.

Original languageEnglish
Title of host publication2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
Pages4592-4595
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

  • Bistatic radar
  • Brewster angle
  • Direct wave
  • F-k filter
  • Ground penetrating radar (GPR)
  • Ground reflection

ASJC Scopus subject areas

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

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