中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2006, Vol. 25 ›› Issue (4): 70-72.

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GPR电磁波在层状路面中传播的正演模拟

谢辉1,丛林1,蔡迎春2,钟燕辉2   

  1. 1.同济大学交通学院,上海 200092;2.河南省道路检测工程研究中心,河南 郑州 450002
  • 收稿日期:2005-05-18 修回日期:2005-07-11 出版日期:2006-08-15 发布日期:2015-05-18
  • 作者简介:谢辉(1978—),男,河南焦作人,博士生,从事路面结构方面研究.

Forward simulation for propagation of GPR electromagnetic wave in layered pavement

XIE Hui1,CONG Lin1,CAI Ying-chun2,ZHONG Yan-hui2   

  1. 1.Department of Road and Airport Engineering,Tongji University,Shanghai 2OOO92,China; 2.Henan Engineering Research Center for Road NDT Technology,Zhangzhou 450002,China
  • Received:2005-05-18 Revised:2005-07-11 Online:2006-08-15 Published:2015-05-18

摘要: 系统阐述了电磁场有限单元法的基本原理,然后采用四节点等参单元分别对三层路面系统进行了静态场和 时变场的有限元分析,初步建立了路用探地雷达GPR电磁波在三层路面中传播的正演模型,同实测波形相比,模拟 效果较好,并用Fortran90语言编制了相应的三维、二维有限元程序,具有较好的可读性和可移植性.

关键词: 路用探地雷达, 电磁场有限元, 等参单元, 正演模型

Abstract: in this dissertation,the principle of FEM in EM was discussed,then athree-layered pavement were analyzed with 4-noded isoparametric elements.Then,corresponding FEM programs are compiled in Foman90.So a forward model was built up to describe the transmitting of electromagnetic in the radar and pavements,according to the system identification method.Compared with the methods of finite difference or FFT,the results are more precise and effective,which are more easily applied in projects.

Key words: GPR, electromagnetic FEM, isoparametric elements, forward model

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