基于时间反转的路面下充水异质体检测  

Detection of Hydrous Heteroplasmon under the Highway Surface Based on Time Reversal

作　　者：姚连明 欧阳缮[1] 刘庆华[1] 吕昌民[1] 汪瑞 YAO Lianming OUYANG Shan LIU Qinghua LU Changmin WANG Rui(School of Informaction and Communication Engineering, Guilin University of Electronic Technology, Guilin 541004, China })

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《现代雷达》2017年第8期28-31,53,共5页Modern Radar

基　　金：国家自然科学基金资助项目(61371186);广西自然科学基金资助项目(2013GXNSFA019004);广西物联网技术及产业化推进协同创新中心资助项目(WLW20060202);桂林电子大学科技大学研究生创新项目(2016YJCX81)

摘　　要：基于公路长期经受日晒、风雨等因素的侵蚀,使公路产生裂痕从而在下方形成积水,导致公路地基变形等问题。针对这一现象,提出了利用探地雷达结合时间反转算法对地下充水异质体进行检测的方法。首先,利用时间反转算法基本理论,通过多层介质下电磁波多次反射与透射修正格林函数,对得到的原始数据进行预处理,进而提高目标分辨率;最后,利用后向投影(BP)成像算法实现对地下充水异质体的检测。实测数据验证了理论的正确性。Due to highway which has been exposed to sun,wind and rain,it＇ s easy to lead the formation of water under the road causing crack. As time passes,the distortion of highway subgrade is caused and is harm to road health. In reaction to phenomenon,a method that is detecting hydrous heteroplasmon under road based on time reversal by GPR is proposed. First,the green function by reflection and transmission of electromagnetic wave of layered media to original data to preprocessing by fundamental time reversal theory is amended,and then reach to resolution enhancement of target,finally finish the detection of hydrous heteroplasmon under highway by BP imaging algorithm. The accuracy of theory is validated by the actual measurement data.

关 键 词：探地雷达 时间反转 格林函数 多层介质 反射与透射 

分 类 号：U418.6[交通运输工程—道路与铁道工程]