摘要
针对目前探地雷达在公路探测中存在的波形分析问题,基于正反演方法,通过建立电磁波在层状结构中传播的总反射模型,研究了公路各结构层及其介电特性对探地雷达反射回波的影响。发现公路结构层的层数主要影响波峰的数目,层厚主要影响该层下表面反射回波的波幅和时延,介电常数主要影响该层上表面反射回波和下表面反射回波,电导率主要影响该层下表面回波波幅。这些分析结果为探地雷达正反演提供了依据,简化了分析和计算的过程,具有很高的应用价值。
In view of the current questions of GPR waveform analysis in highway detections,based on the forward and inverse method,by establishing the total reflection model of the electromagnetic wave propagation in layered structure,we studied the effects of various highway structures and the dielectric properties on the GPR echo.The results show that the number of highway layers mainly influences the number of peaks,the thickness mainly influences the amplitude and time delay of the back surface echo,the dielectric constant mainly influences the surface and back surface echo,the conductivity mainly affects the amplitude of the back surface echo.These results provide a basis for the forward and inverse method of GPR and simplify the process of analysis and calculation,with a high application value
作者
尹德
叶盛波
张经纬
刘晋伟
刘小军
Yin De;Ye Shengbo;Zhang Jingwei;Liu Jinwei;Liu Xiaojun(Key Laboratory of Radiation and Detection Technology, Institute of Electronics, Chinese Academic of Sciences, Beijing 100190, China;Graduate University of Chinese Academy of Sciences, Beiiing 100049, China)
出处
《电子测量技术》
2018年第5期51-56,共6页
Electronic Measurement Technology
基金
国家高技术研究发展计划(863计划)(2012AA061403.05)
北京交通行业科技项目(7C1405473)资助
关键词
探地雷达
正反演
层状结构
介电特性
ground penetrating radar
the forward and inverse method
layered structure
dielectric properties
