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Detectability of junctions of underground electrical cables with a ground penetrating radar: Electromagnetic simulation and experimental measurements

机译：具有探地雷达的地下电缆接头的可检测性：电磁模拟和实验测量

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摘要

For electricity distribution companies, being able to accurately detect the position of buried power cables using nondestructive methods is a crucial issue. The most important issue is the localization of the junction part linking the cables to each other where most maintenance operations are carried out. In this work we have conducted a feasibility study to confirm the relevance of high frequency Ground Penetrating Radar (GPR) to detect these buried junctions in their environment despite the clutter. The cables are buried in an inhomogeneous Earth medium at about one meter deep. Consequently, we have optimized a folded bowtie antenna to fit the frequency band [0.5 GHz-3 GHz]. Then a rigorous model of the cable is considered in the numerical study using the optimized antenna in a bi-static configuration. A full wave electromagnetic simulation software (CST MWS) has been used to study the detectability of the junction within dry and wet homogeneous sands then a classical Kirchhoff migration technique has been used to process the data and localize the junction. Finally, our analysis has been validated by measurements at a test site (real environment) to show the efficiency of the proposed analysis. The measured data are also post-processed using a digital filtering technique for clutter reduction and visibility enhancement of the buried cable. (C) 2017 Elsevier Ltd. All rights reserved.
机译：对于配电公司而言，能够使用非破坏性方法准确检测埋入式电缆的位置是至关重要的问题。最重要的问题是执行大多数维护操作的将电缆彼此连接的连接部分的局部化。在这项工作中，我们进行了可行性研究，以确认高频地面穿透雷达（GPR）在杂乱无章的情况下检测其环境中这些埋藏结点的相关性。电缆埋在约一米深的不均匀地球介质中。因此，我们优化了折叠式领结天线以适合[0.5 GHz-3 GHz]频段。然后在数值研究中使用双天线配置中的优化天线来考虑电缆的严格模型。已使用全波电磁仿真软件（CST MWS）研究了干和湿均质砂中交界处的可检测性，然后使用经典的Kirchhoff迁移技术来处理数据并确定交界处。最后，我们的分析已通过在测试现场（实际环境）进行的测量验证，以显示所提出分析的效率。还使用数字滤波技术对测得的数据进行后处理，以减少杂波并提高埋入式电缆的可见度。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Construction and Building Materials》 |2018年第15期|1099-1110|共12页
  • 作者

    Liu Xiang; Serhir Mohammed; Lambert Marc;

  • 作者单位

    UPMC Univ Paris 06, Sorbonne Univ, Univ Paris Saclay,UMR CNRS 8507, Univ Paris Sud,GeePs Grp Elect Engn Paris,Central, 3&11 Rue Joliot Curie, F-91192 Gif Sur Yvette, France;

    UPMC Univ Paris 06, Sorbonne Univ, Univ Paris Saclay,UMR CNRS 8507, Univ Paris Sud,GeePs Grp Elect Engn Paris,Central, 3&11 Rue Joliot Curie, F-91192 Gif Sur Yvette, France;

    UPMC Univ Paris 06, Sorbonne Univ, Univ Paris Saclay,UMR CNRS 8507, Univ Paris Sud,GeePs Grp Elect Engn Paris,Central, 3&11 Rue Joliot Curie, F-91192 Gif Sur Yvette, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ground penetrating radar; Ultra Wide band antenna; Full-wave electromagnetic simulation; Migration;

    机译：探地雷达;超宽带天线;全波电磁仿真;迁移;

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