Estimating azimuth of subsurface linear targets by polarimetric GPR

Hai Liu, Xiaoyun Huang, Bangan Xing, Jie Cui, Billie F. Spencer, Qing Huo Liu

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

Abstract

Ground penetrating radar (GPR) has been widely applied to detection of subsurface linear targets, such as underground pipes and reinforced rebars in concrete structures. The azimuth direction of a subsurface linear target can be hardly delineated by a commercial single-polarization GPR system. In this paper, a hybrid dual-polarimetric GPR system is employed to detect buried linear objects. A full-polarimetric scattering matrix is extracted from the double-channel GPR reflection signal. A rotation transformation is applied to the scattering matrix to estimate the target azimuth angle. A laboratory experiment was conducted to detect four metal rebars buried in dry sand at different azimuth angle relative to the GPR scan direction. The maximum error of the estimated azimuth direction is less than 15%. It is concluded that radar polarimetry can provide richer information than single-polarization GPR.

Original languageEnglish (US)
Title of host publication2018 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages6784-6787
Number of pages4
ISBN (Electronic)9781538671504
DOIs
StatePublished - Oct 31 2018
Event38th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018 - Valencia, Spain
Duration: Jul 22 2018Jul 27 2018

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)
Volume2018-July

Conference

Conference38th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018
CountrySpain
CityValencia
Period7/22/187/27/18

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Keywords

  • Azimuth estimation
  • Ground penetrating radar (GPR)
  • Hybrid dual-polarization
  • Subsurface linear target

ASJC Scopus subject areas

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

Cite this

Liu, H., Huang, X., Xing, B., Cui, J., Spencer, B. F., & Liu, Q. H. (2018). Estimating azimuth of subsurface linear targets by polarimetric GPR. In 2018 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018 - Proceedings (pp. 6784-6787). [8517637] (International Geoscience and Remote Sensing Symposium (IGARSS); Vol. 2018-July). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IGARSS.2018.8517637