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Three-dimensional Image Reconstruction for Subsurface Radar Data Processing

Research Project

Project/Area Number 11450147
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 情報通信工学
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

SATO Toru  Kyoto University, Graduate School of Informatics, Professor, 情報学研究科, 教授 (60162450)

Co-Investigator(Kenkyū-buntansha) KASAHARA Yoshiya  Kyoto University, Graduate School of Informatics, Research Associate, 情報学研究科, 助手 (50243051)
Project Period (FY) 1999 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥12,100,000 (Direct Cost: ¥12,100,000)
Fiscal Year 2001: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 2000: ¥4,300,000 (Direct Cost: ¥4,300,000)
Fiscal Year 1999: ¥5,000,000 (Direct Cost: ¥5,000,000)
Keywordssubsurface remote sensing / high-resolution radar / radar signal processing / discrete model fitting / inhomogeneous media / 3次元画像化手法
Research Abstract

Super-resolution direction finding algorithms inherently assume narrow-band signals, which are not applicable to ultra-wideband radars such as GPR (ground penetration radar).
We have developed imaging algorithms for GPR based on the model fitting principle. A robust and high-resolution imaging algorithm is proposed for retrieving the shape of conductive objects embedded in a uniform lossy and dispersive medium. The target is modeled in terms of the location of of points which represents the outer contour of the object together with the parameters of the medium. A nonlinear least squares fitting is applied to the estimated scattered wave form to adjust the model parameters.
The estimated wave form is computed using the extended ray tracing method which incorporates with the edge diffraction waves. The performance of the algorithm is examined with numerical simulations and test site experiments. The simulation with clutters also revealed the robustness of the algorithm even under a fairly … More strong clutter environments.
Noise reduction is another most important issue in the signal processing of subsurface radars. We developed a noise reduction scheme based on a parabolic wavelet transform, which is designed to detect hyperbolic features associated to subsurface radar images. The major limitation of the proposed algorithm was that the parabolic wavelets do not give an orthogonal basis, which limits the reconstruction capability of the algorithm.
We then developed a scheme based on similar wavelet bases, but employing the recursive non-orthogonal decomposition algorithm known as the matching pursuit. The advantage is that the desired signal can be retrieved from a very noisy data if the wave form is included in the dictionary. The inherent problem of this procedure is a heavy computational load because a large number of iteration is needed.
The developed schemes substantially reduce the computation by customizing the algorithm to the signal processing of subsurface radars, and by taking into account the characteristics of the desired signals. The capability of the proposed algorithm in detecting various targets buried in the noise is evaluated based on simulated data for an attenuating and dispersive medium. It is shown that the rough size and the shape of the target can be estimated in the process of this decomposition. Less

Report

(4 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (27 results)

All Other

All Publications (27 results)

  • [Publications] T.Sato: "Shape estimation of space debris using single-range Doppler interferometry"IEEE Trans. Geosci. Remote Sens.. 37. 1000-1005 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Sato: "An imaging algorithm of objects embedded in a lossy dispersive medium for subsurface radar data processing"IEEE Trans. Geosci. Remote Sens.. 38. 296-303 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Sato: "Recursive non-orthogonal decomposition with hyperbolic wavelets for subsurface radar signal processing"Proc. 2000 Int. Symp. Antennas Propagat.. 1693-1696 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 笠原禎也: "ガウス分布モデル波動分布関数法による伝搬ベクトル推定に関する研究"電子情報通信学会論文誌. J84-B. 263-271 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Sato: "High sensitivity radar-optical observations of faint meteors"IEICE Trans. Commun.. E84-C. 1877-1984 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y.Kasahara: "A Flexible Modeling of Global Plasma Profile Deduced from Wave Data"Progress in Discovery Science, Lecture Notes in Computer Science. (in press). (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Sato: "Shape estimation of space debris using single-range Doppler interferometry"IEEE Trans. Geosci. Remote Sens.. Vol.37, No.2. 1000-1005 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Sato, T. Wakayama, K. Takemura: "An imaging algorithm of objects embedded in a lossy dispersive medium for subsurface radar data processing"IEEE Trans. Geosci. Remote Sens.. Vol.38, No.1. 296-303 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Sato, Y. Tada: "Recursive non-orthogonal decomposition with hyperbolic wavelets for subsurface radar signal processing"Proc. 2000 Int. Symp. Antennas Propagat.. 1693-1696 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Sato, Y. Tada: "Noise reduction and identification of subsurface radar images using recursive wavelet decomposition"Proc. 2000 IEEE Int. Geosci. Remote Sens. Symp.. 660-662 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Sato, T. Nakamura, K. Nishimura: "Orbit determination of meteors using the MU radar"IEICE Trans. Commun. Vol.E83-B, No. 9. 1990-1995 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y.Goto, Y.Kasahara, T.Sato: "Study on direction finding method using wave distribution function with Gaussian distribution model"IEICE Trans. Commun.. Vol. J84-B, No.2(in Japanese). 263-271 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Nishimura, T. Sato, T. Nakamura, M. Ueda: "High sensitivity radar-optical observations of faint meteors"IEICE Trans. Electron.. Vol. E84-C, No.12. 1877-1884 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Kasahara, H. Matsumoto, H. Kojima: "Type III Solar Radio Bursts in the Inhomogeneous Interplanetary Space Observed by GEOTAIL"Radio Science. Vol.36, No.6. 1701-1711 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Goto, Y. Kasahara, T. Sato: "A Flexible Modeling of Global Plasma Profile Deduced from Wave Data, Progress in Discovery Science, Lecture Notes in Computer Science"(in press). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Kasahara, R. Niitsu, T. Sato: "Computational Analysis of Plasma Waves and Particles in the Auroral Region Observed by Scientific Satellite, Progress in Discovery Science, Lecture Notes in Computer Science"(in press). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Sato: "High sensitivity radar-optical observations of faint meteors"IEICE Trans. Commun.. E84-C. 1877-1984 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Y.Kasahara: "A Flexible Modeling of Global Plasma Profile Deduced from Wave Data"Progress in Discovery Science, Lecture Notes in Computer Science. (in press). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Y.Kasahara: "Type III Solar Radio Bursts in the Inhomogeneous Interplanetary Space Observed by GEOTAIL"Radio Science. 106(10). 1701-1711 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Sato: "Precise orbit determination of meteors using a radar and an optical sensor"Proc. 2001 IEEE Int. Geosci. Remote Sens. Symp.. TP05-02 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Sato: "Orbit determination of meteors using the MU radar"IEICE Trans. Commun. . E83-B. 1990-1995 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 笠原禎也: "ガウス分布モデル波動分布関数法による伝搬ベクトル推定に関する研究"電子情報通信学会論文誌. J84-B. 263-271 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Sato: "Recursive non-orthogonal decomposition with hyperbolic wavelets for subsurface radar signal processing"Proc. 2000 Int. Symp. Antennas Propagat. . 1693-1696 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Sato: "Noise reduction and identification of subsurface radar images using recursive wavelet decomposition"Proc. 2000 IEEE Int. Geosci. Remote Sens. Symp. . 660-662 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Sato: "Space debris measurements in Japan"Adv. Space Res.. 23. 55-65 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Sato: "Shape estimation of space debris using single-range Doppler interferometry"IEEE Trans. Geosci. Remote Sens.. 37. 1000-1005 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Sato: "An imaging algorithm of objects embedded in a lossy dispersive medium for subsurface radar data processing"IEEE Trans. Geosci. Remote Sens.. 38(印刷中). (2000)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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