【摘要】 基于对探地雷达回波信号的分析,提出了等效时间取样的探地雷达系统的设计方法。并分析了天线中心频率、分辨率和取样间隔的关系,构建了一种步进时间达到1.25×10-2ns的步进系统,实现了高分辨率的探测。最后,采用研制的探地雷达实验系统进行了实际探测实验,探测结果表明,等效时间取样技术对该系统是有效的,且步进系统的稳定性是较高的。更多还原

【Abstract】 In this paper,a ground penetrating radar(GPR)with equivalent-time sampling is designed by analyzing the return signal od the radar.By employing the relationship of antenna center frequency,resolution and sampling separation,a step-sampling pulse generator with ns precision is designed for realizing high resolution detection.The measured data from a experimental radar show the validity of the proposed method.更多还原