用于衬砌探测的空气耦合探地雷达天线设计  

Design of Air-Coupled Ground Penetrating Radar Antenna for Lining Detection

作　　者：王百泉 董可欣 刘昌斌 陈思宇[2] 王华 刘永胜 谢韬 古艳旗[3] 张安学[2] WANG Baiquan;DONG Kexin;LIU Changbin;CHEN Siyu;WANG Hua;LIU Yongsheng;XIE Tao;GU Yanqi;ZHANG Anxue(Guangdong Provincial Key Laboratory of Intelligent Monitoring and Maintenance of Tunnel Structure,China Railway Tunnel Group Co.,Ltd.,Guangzhou 511458,China;Institute of Electromagnetic and Information Technology,Xi’an Jiaotong University,Xi’an 710049,China;The 2nd Engineering Co.,Ltd.of China Railway Tunnel Group,Sanhe 065201,China)

机构地区：[1]中铁隧道局集团有限公司广东省隧道结构智能监控与维护企业重点实验室,广东广州511458 [2]西安交通大学电磁与信息技术研究所,陕西西安710049 [3]中铁隧道集团二处有限公司,河北三河065201

出　　处：《测试技术学报》2023年第1期79-86,共8页Journal of Test and Measurement Technology

基　　金：陕西省重点研发计划资助项目(2021GXLH-Z-013);国家自然科学基金资助项目(61971340)。

摘　　要：针对隧道衬砌探测的实际需求,基于Vivaldi天线形式,通过对天线的馈电结构和装配方式进行优化,设计和实现了一款应用于探地雷达系统的超宽带脉冲辐射天线。所设计天线具有良好的空气耦合特性,其带宽可覆盖770 MHz~1650 MHz;该天线所辐射时域脉冲波形的拖尾度小于10%。将收发天线装配于所设计的天线罩内,完成空气耦合雷达样机的设计、制作和测试,结果表明所设计天线系统具有与目标相距1 m~2 m的探测能力,对浅层目标分辨清晰,有效探测出了钢拱架结构,可用于隧道衬砌病害检测。Given the actual needs of tunnel lining detection,based on the Vivaldi antenna form,this paper designs and implements an ultra-wideband pulse radiation antenna for ground penetrating radar applications by optimizing the feeding structure and assembly method of the antenna.The designed antenna offers bandwidth from 770 MHz to 1650 MHz and has good air coupling characteristics.The tailing degree of the time-domain pulse waveform radiated by the antenna is less than 10%.The transmitting antenna and receiving antenna are assembled in the designed radome,and the design,manufacture,and test of the air-coupled radar prototype are completed.The results show that the radar system equipped with the designed antenna has a detection capability of 1 m~2 m away from the target,which can clearly distinguish the shallow target and effectively detect the steel arch structure,showing its potential in the detection of tunnel lining diseases.

关 键 词：衬砌探测 探地雷达(GPR) 空气耦合 宽带天线 VIVALDI天线 

分 类 号：TN82[电子电信—信息与通信工程]