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A comparison of imaging methods using GPR for landmine detection, and, A preliminary investigation into the SEM for identification of buried objects.

机译:使用GPR进行地雷探测的成像方法的比较,以及对SEM进行初步调查以识别掩埋物体的方法。

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摘要

Part I. Various image reconstruction algorithms used for subsurface targets are reviewed. It is shown how some approximate wavefield inversion techniques: Stripmap Synthetic Aperture Radar (SAR), Kirchhoff Migration (KM) and Frequency-Wavenumber (FK) migration are developed from various models for wavefield scattering. The similarities of these techniques are delineated both from a theoretical and practical perspective and it is shown that Stripmap SAR is, computationally, almost identical to FK migration.; Part II. A preliminary investigation into the use of the Singularity Expansion Method (SEM) for use in identifying landmines is completed using a Finite-Difference Time-Domain code to simulate a simplified GPR system. The Total Least Squares Matrix Pencil Method (TLS-MPM) is used to determine the complex poles from an arbitrary late-time signal. Both dielectric and metallic targets buried in lossless and lossy half-spaces are considered. (Abstract shortened by UMI.)
机译:第一部分。审查了用于地下目标的各种图像重建算法。它显示了如何从各种波场散射模型开发一些近似的波场反演技术:带状图合成孔径雷达(SAR),基尔霍夫偏移(KM)和频率-波数(FK)偏移。从理论和实践角度都描述了这些技术的相似性,并且表明,Stripmap SAR在计算上几乎与FK迁移相同。第二部分使用有限差分时域代码模拟简化的GPR系统,完成了使用奇异扩展方法(SEM)识别地雷的初步研究。总最小二乘矩阵笔法(TLS-MPM)用于根据任意后期信号确定复数极点。埋在无损和有损半空间中的电介质和金属靶均被考虑。 (摘要由UMI缩短。)

著录项

  • 作者

    Gilmore, Colin Gerald.;

  • 作者单位

    University of Manitoba (Canada).;

  • 授予单位 University of Manitoba (Canada).;
  • 学科 Engineering Electronics and Electrical.
  • 学位 M.Sc.
  • 年度 2005
  • 页码 141 p.
  • 总页数 141
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

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