Step-frequency radar imaging for nondestructive evaluation (NDE) and ground-penetrating radar (GPR) applications

William H. Weedon, Weng Cho Chew, Chad A. Ruwe

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

Abstract

We describe a step-frequency microwave radar imaging system that is suitable for nondestructive evaluation (NDE) and ground-penetrating radar (GPR) applications. The system includes a computer-automated microwave measurement apparatus along with nonlinear inverse scattering imaging algorithms. Through the use of an inverse Fourier transform, the SFR data is transformed into a synthetic time-domain pulse, and imaging algorithms are applied to the time-domain data. A calibration procedure involving the use of calibration targets is described in order to remove pulse distortions due to the effective aperture and dispersive nature of the antennas, as well as those distortions due to connectors, transmission lines, directional couplers and amplifiers. Reconstructions of various metallic and dielectric scattering objects including metallic rods, glass rods and plastic PVC pipes from real measurement data collected in our laboratory are shown.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsSatish S. Udpa, Hsiu C. Han
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages156-167
Number of pages12
ISBN (Print)0819415995
StatePublished - Dec 1 1994
EventAdvanced Microwave and Millimeter-Wave Detectors - San Diego, CA, USA
Duration: Jul 25 1994Jul 26 1994

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2275
ISSN (Print)0277-786X

Other

OtherAdvanced Microwave and Millimeter-Wave Detectors
CitySan Diego, CA, USA
Period7/25/947/26/94

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Weedon, W. H., Chew, W. C., & Ruwe, C. A. (1994). Step-frequency radar imaging for nondestructive evaluation (NDE) and ground-penetrating radar (GPR) applications. In S. S. Udpa, & H. C. Han (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (pp. 156-167). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 2275). Society of Photo-Optical Instrumentation Engineers.