用于探地雷达系统仿真的行波天线等效模型及应用  

An Equivalent Model of Traveling-Wave Antenna in Simulating GPR Systems and Its Applications

作　　者：王勇军[1] 柯凯 左乐 WANG Yongjun;KE Kai;ZUO Le(Unit 91404,PLA,Qinhuangdao 066001,China;The 29th Research Institute of CECT,Chengdu 610036,China)

机构地区：[1]中国人民解放军91404部队,河北秦皇岛066001 [2]中国电子科技集团公司第二十九研究所,四川成都610036

出　　处：《无线电工程》2019年第11期986-989,共4页Radio Engineering

摘　　要：为了能够建立一种简单、通用且不需对实际天线建立物理模型的等效模型,提出了一种用于冲激脉冲探地雷达系统时域仿真的行波天线等效模型,该模型仅需考虑天线上的电流分布,将时域有限差分算法嵌入该模型,实现天线自由空间辐射场的计算,并将计算结果与加载领结天线辐射波形进行对比,通过对雷达半空间扫描进行仿真,将扫描结果与探地雷达实测A扫,B扫数据进行对比,可以实现较好的吻合,验证了模型的正确性,为模型应用于2种极化方式考察和多天线配置方案考察中奠定技术基础。An equivalent model of loaded traveling-wave antenna for performance simulation of ground-penetrating radar systems is proposed in this paper.This model is simple,since it describes the waves of current on antennas rather than establishing physical antenna model.Simulations were conducted for radiated waveform of loaded bow-tie antenna in freespace and results were compared to a realistic antenna.Furthermore,simulations were conducted for radar A-scan and B-scan data in half space and results were compared to the measured results.Good agreements were obtained to illustrate the effectiveness of this model.This model is then applied to the observation of different polarizations and of multiple-antenna configurations.

关 键 词：探地雷达 行波天线 时域有限差分法 

分 类 号：TN82[电子电信—信息与通信工程]