• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of high-resolution subsurface radar for inhomogeneous media

Research Project

Project/Area Number 06555108
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section試験
Research Field 情報通信工学
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

SATO Toru  Kyoto University, Graduate School of Electronics and Communication, Associate Professor, 工学研究科, 助教授 (60162450)

Co-Investigator(Kenkyū-buntansha) SHINBO Tetsuya  Komatsu Co.Ltd.Research Scientist, 研究員
KASAHARA Yoshiya  Kyoto University, Graduate School of Electronics and Communication, Research Ass, 工学研究科, 助手 (50243051)
KIMURA Iwane  Osaka Institute of Technology, Faculty of Information Science, Professor, 情報科学部, 教授 (00025884)
Project Period (FY) 1994 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥7,100,000 (Direct Cost: ¥7,100,000)
Fiscal Year 1996: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1995: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 1994: ¥3,500,000 (Direct Cost: ¥3,500,000)
Keywordssubsurface remote sensing / high-resolution radar / radar signal processing / discrete model fitting / inhomogeneous media
Research Abstract

For an accurate imaging of subsurface objects, it is essential to develop an algorithm which can handle the effect of strong clutter and the dispersive medium. While it is very hard to include the effect of loss and dispersion in inverse scattering problems, various numerical procedures have already been developed for the forward scattering case. Our approach has been to model the target with a limited number of parameters, and to recursively modify it so that the observed signal waveforms fit the estimated ones computed for the model. In order to save the machine time, we compute the estimated scattered wave by using a modified ray tracing method which include the effect of diffraction.
Our previous algorithm is, however, applicable only to the case of lossless and non-dispersive medium. In this work, we extended it to handle a more realistic case of target imaging in a two-dimensional homogeneous lossy and dispersive medium. The attenuation and dispersion of the transmitted waveform is taken care of by applying proper filter functions which are synthesized in the frequency domain. The model parameters to be determined are the permittivity and conductivity of the medium, their frequency derivatives, and the location of several points that characterize the outer contour of the object.
The performance of the developed algorithm is quantitatively wexamined by numerical simulations. The simulated data are generated using the Frequency-Dependent FDTD method. Target shapes assumed are conductive cylinders and plates whose size is a few wavelengths at the center frequency of the pulse. In order to examine the tolerance of the algorithm against clutters, 200 point targets with various permittivity are randomly embedded in the simulated medium. It is found that the algorithm can accurately reconstruct the target shape for the signal-to-clutter ratio of larger than 10dB,and the size can be correctly estimated even with S/C of 4dB.

Report

(4 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • 1994 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] T. Sato: "Automatic data processing procedure for ground probing radar" IEICE Trans. Commun.E77-B. 831-837 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T. Sato: "Radar image reconstruction in layered inhomogeneous media by discrete model fitting method" Proc. IEEE Int. Symp. Antennas Propagat.1664-1666 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T. Sato: "Automatic signal processing of front monitor radar for tunneling machines" Proc. 5th Int. Conf. Ground Penatrating Radar. 1027-1039 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T. Sato: "Parametric imaging of small subsurface objects" Proc. 6th Int. Conf. Ground Penatrating Radar. 261-265 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T. Sato: "A High-Resolution Imaging of Small Objects for Subsurface Radar Data Processing" Proc. IEEE Int. Symp. Geosci. Remote Sens.775-777 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T. Sato: "Automatic signal processing of front monitor radar for tunneling machines" IEEE Trans. Geosci. Remote Sens. (印刷中). 35. (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Sato, et al.: "Automatic data processing procedure for ground probing radar" IEICE Trans. Commun. Vol.E77-B. 831-837 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Sato, et al.: "Radar image reconstruction in layred inhomogeneous media by discrete model fitting method" Proc.1994 IEEE Int.Symp.Antennas Propagat.1664-1666 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Sato, et al.: "Automatic signal processing of front monitor radar for tunnelling machines" Proc.5th Int.Conf.Ground Penatrating Radar. 1027-1039 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Sato, et al.: "Parametric imaging of small subsurface objects" Proc.6th Int.Conf.Ground Penatrating Radar. 261-265 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Sato, et al.: "A high-resolution imaging of small objects for subsurface radar data processing" Proc.IEEE Int.Symp.Geosci.Remote Sens.775-777 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Sato, et al.: "Automatic signal processing of front monitor radar for tunnelling machines" IEEE Trans.Geosci Remote Sens.Vol.35, (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Sato: "A High-Resolution Imaging of Small Objects for Subsurface Radar Data Processing" Proc.IEEE Int.Symp.Geosci.Remote Sens.775-777 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Sato: "Automatic signal processing of front monitor radar for tunneling machines" IEEE Trans.Geosci.Remote Sens.35(印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 佐藤亨: "均一分散性媒質中のレーダ物体像再構成法の研究" 電子情報通信学会技術研究報告. SANE96-80. 17-24 (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] T. Sato: "A High-Resolution Imaging of Small Objects for Subsurface Radar Data Processing" Proc. IEEE Int. Symp. Geosci. Remote Sens.(印刷中). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 佐藤 亨: "地下探査レーダーを用いた埋設物体の形状推定とその問題点" 電子情報通信学会技術研究報告. SANE95-36. 73-79 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 佐藤 亨: "任意形状地層境界を含む媒質中の埋設物のレーダー探査に関する研究" 電子情報通信学会技術研究報告. SANE95-104. 17-22 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Sato: "Automatic data processing procedure for ground probing radar" IEICE Trans.Commun.E77-B. 831-837 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Sato: "Automatic signal processing of front monitor radar for tunneling machines" Proc.5th Intl.Conf.Ground Penetrating Radar. 1027-1039 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 佐藤亨: "離散モデルフィッティング法を用いた有限の大きさを持つターゲットの形状推定の試み" 電子情報通信学会技術研究報告. SANE94-62. 33-40 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 佐藤亨: "傾斜境界を持つ層状媒質中のレーダーターゲット推定法" 電子情報通信学会技術研究報告. SANE94-85. 65-71 (1995)

    • Related Report
      1994 Annual Research Report

URL: 

Published: 1994-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi