A study of antenna configuration for bistatic ground-penetrating radar
A study of antenna configuration for bistatic ground-penetrating radar
复制标题
双基地探地雷达天线结构研究
DOI：
10.1109/icgpr.2016.7572697
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
K. W. Kim
中科院分区：
文献类型：
--
作者：
W. Kang;C. Kim;J. H. Kim;S. Park;S. J. Cho;J. Son;K. W. Kim
近年来，城市地下空洞引起的地面沉降问题日益引起人们的关注。为了防止这种灾难，一种探地雷达（GPR）技术被广泛用于成像和检测路基空洞。本文研究了双站探地雷达系统天线配置的时域特性。根据天线方向的不同，该系统分为两种类型：侧射和端射。对每种系统，在时域上对球形地下空洞模型散射的探地雷达信号进行了比较和分析。然后，为了使能量更好地穿透到地面，研究了在天线下方放置阻抗匹配介质。考虑到数值结果，可以提供从感兴趣的雷达目标散射的信号的最大水平的系统被确定。这项研究将有助于深入了解如何建立一个多通道的天线系统，以检测在城市地区的路基空洞。
Recently, a public attention to ground subsidence due to the subsurface cavities in the urban area is growing. To prevent such catastrophe, a ground-penetrating radar (GPR) technique is being widely used to image and detect roadbed cavities. In this paper, properties in timedomain of antenna configurations are investigated to construct a bistatc GPR system. The system is categorized into two types: broadside and endfire, according to the antenna orientation. For each system, GPR signals scattered from spheric subsurface cavity model are compared and analyzed in the time domain. Then, for better energy penetration into the ground, impedance matching medium put below the antenna is studied. Considering the numerical results, the system that can provide a maximum level of signals scattered from the radar target of interest is determined. This study would help to give an insight into how a multi-channel antenna system is built to detect roadbed cavities in the urban area.