摘要
为了探究混凝土空洞雷达图像所呈现的规律,基于时域有限差分法,通过GprMax3.0软件,建立了不同形状、不同填充介质的地下空洞模型。对这些空洞模型进行了正演模拟,得到了雷达图谱,分析了形状和填充介质对空洞目标回波的影响。并通过物理模型试验,对正演模拟结果进行了验证。
In order to explore the regularity of the image of underground cavities, the models of the ground based radar based on finite difference time domain method with different shapes and different filling media were established by GprMax 3.0 software. The forward simulation of these cavity models was carried out, and the radar images were obtained. The effect of the shape of the cavity and the filling media of the target echo were analyzed. The physical model tests of forward modeling results were validated.
作者
陈婕
凌同华
刘浩然
杨宇
CHEN Jie;LING Tong hua;LIU Hao ran;YANG Yu(School of Civil Engineering,Changsha University of Science ﹠ Technology,Changsha 410114,China)
出处
《交通科学与工程》
2018年第3期31-37,共7页
Journal of Transport Science and Engineering
基金
国家自然科学基金项目(51678071)
关键词
探地雷达
空洞检测
时域有限差分法
ground penetrating radar
catities detection
finite difference time domainmethod
