重庆大学学报2016，Vol.39Issue(4)：32-40,9.DOI:10.11835/j.issn.1000-582X.2016.04.005
介电参数数值实验在探地雷达试验检测中的应用
Application of dielecttic patametet numetical expetiment to GPR test and detection
摘要
Abstract
Absttact:Relative permittivity calibration is an important part of ground penetrating radar (GPR)test and detection,which directly affects the test accuracy of GPR.Conventional core-drilling method uses reflection time and the thickness of core to get wave velocity and approximate permittivity,and often ignores the influence of the conductivity on the radar wave velocity.In order to reduce the errors caused by the single core-drilling method,we used the time domain finite difference method to carry out numerical experiments on the double dielectric parameters of reinforced concrete with different conductivities,investigated the relationship among the relative permittivity,the conductivity and the radar wave velocity of the reinforced concrete from the three aspects of the simulation sections,the single scan signal and the snapshots of Ez component respectively,and obtained the correlation between the double dielectric parameters and the radar wave velocity calibration with cubic interpolation and biharmonic interpolation.Results show the correlation between the double dielectric parameters and the radar wave velocity calibration is a section surface distribution and the conductivity and relative dielectric parameters should to be integrally taken into account in radar wave velocity calibration.关键词
介电参数/数值实验/钢筋混凝土/探地雷达/试验检测Key words
dielectric parameter/numerical experiment/reinforced concrete/ground penetrating radar/test and detection分类
交通工程引用本文复制引用
尹小波,张彬,邓继平,涂征宇,刘超云..介电参数数值实验在探地雷达试验检测中的应用[J].重庆大学学报,2016,39(4):32-40,9.基金项目
中国铁路总公司科技研究开发计划项目（2014G005-B）；湖南省交通科技计划项目（201423）；湖南省住房和城乡建设厅科技计划项目（BZ201408，BZ201411）。Supported by Science and Technology Program of China Railway Corporation （2014G005-B），Science and Technology Program of Traffic Department of Hunan Province（201423），Science and Technology Program of Construction Department of Hunan Province （BZ201408，BZ201411）． （）
