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Volume 39 Issue 1
Feb.  2020
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Article Navigation >  CARSOLOGICA SINICA  > 2020  >  39(1): 101-109
CHEN Jun, CHI Changfeng, XU Dongsheng, LIANG Feng. Application of GPR scattering matrix to estimating azimuths of underground pipelines[J]. CARSOLOGICA SINICA, 2020, 39(1): 101-109. doi: 10.11932/karst20200105
Citation: CHEN Jun, CHI Changfeng, XU Dongsheng, LIANG Feng. Application of GPR scattering matrix to estimating azimuths of underground pipelines[J]. CARSOLOGICA SINICA, 2020, 39(1): 101-109. doi: 10.11932/karst20200105
shu

Application of GPR scattering matrix to estimating azimuths of underground pipelines

doi: 10.11932/karst20200105
  • 1.

    Guizhou Institute of Technology, Guiyang，Guizhou 550003, China

  • 2.

    OCT Cultural & Travel Investment Co., Ltd., Hengyang，Hunan 421000, China

  • 3.

    Chongqing Construction Science Research Institute, Chongqing 400016, China

  • 4.

    Resources and Environmental Engineering College, Guizhou University, Guiyang，Guizhou 550025, China

  • Publish Date: 2020-02-25
    Abstract
  • This paper analyzes the properties of the scattering matrix S related to the incidence and scattering of ground penetrating radar and electromagnetic field. The four elements in the scattering matrix provide information corresponding to different polarization directions of the incident wave field. Based on this, the Alford rotates of scattering matrix S is used. to estimate the azimuth of the elongated target. Due to low amplitude and noise, the estimation of the angle is actually an unstable process. Therefore, the use of norm as a tool for screening the optimal amplitude is chosen to make the estimation of the angle more accurate and stable. The method is tested by using the simulation data obtained from the three-dimensional model of the metal tube buried in the uniform half space. When selecting the appropriate amplitude, the Frobenius norm ‖S‖F≥0.1?‖S‖F(max) is determined. The results show that the method of estimating the azimuth of the underground pipeline is effective.

     

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