一种低频超宽带脉冲探地雷达天线设计  

Design of a Low Frequency Ultra-Wideband PulseGround Penetrating Radar Antenna

作　　者：梁平乐 樊易航 刘溢成 李建星 陈娟[1] LIANG Pingle;FAN Yihang;LIU Yicheng;LI Jianxing;CHEN Juan(School of Information and Communication Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]西安交通大学信息与通信工程学院,西安710049

出　　处：《现代应用物理》2023年第3期189-195,共7页Modern Applied Physics

基　　金：深圳科技计划基金资助项目(JCYJ20180508152233431)。

摘　　要：针对探地雷达天线的设计,提出了一款变形蝶形天线,天线的整体尺寸为530 mm×483 mm×2 mm,工作频段为180 MHz~3 GHz,相对带宽达177%,可实现超宽带脉冲信号的完整辐射。对天线进行了实物加工和测试,各项性能的测试结果均与仿真结果的吻合良好。将该天线用于探地雷达系统,分别对隧道埋藏目标、高架桥及行进车辆进行了测试,测试结果表明,雷达系统探测距离大于10 m,纵向分辨率小于0.6 m,且可实现动态目标探测。A modified bow-tie antenna is proposed with the overall size of 530 mm×483 mm×2 mm.The relative bandwidth of the antenna reaches 177%from 180 MHz to 3 GHz,which can realize the complete radiation of the ultra-wideband pulse signal.The antenna is fabricated and measured,and the results are in good agreement with the simulation results.The ground penetrating radar with the proposed antenna is tested against a buried target in the tunnel,a viaduct,and moving vehicles.The results show that the ground penetrating radar has a detection range of more than 10 m with a longitudinal resolution of less than 0.6 m.In addition,the ground penetrating radar can detect the dynamic target.

关 键 词：蝶形天线 超宽带 探地雷达 深层目标探测 分辨率 

分 类 号：TN82[电子电信—信息与通信工程]