冲击脉冲型探地雷达等效采样方法的研究  

Equivalent sampling method for echo signal of impulse ground penetrating radar

作　　者：屈义萍[1] 刘四新[1] 徐晓林[1] 

机构地区：[1]沈阳航空工业学院,沈阳110136

出　　处：《电子测量技术》2010年第1期8-10,共3页Electronic Measurement Technology

摘　　要：提出一种对探地雷达回波信号这种高频率的信号进行采集的方法,即等效时间采样方法.并设计实现了等效时间采样的具体电路,包括产生步进采样脉冲的高精度步进系统、采样门电路等,通过实验证明该方法的有效性。The Impulse Ground Penetrating Radar（GPR） request launch pulse signal to achieve the requirements of ns and above, its echo signals have a very wide bandwidth, if carries on the real-time sample directly, then the request has the high speed sampling component to satisfy the sampling theorem the request for this. This article proposed one kind to searches the radar echo signal this kind of high-frequency signal to carry on gathering the method, namely equivalent time sampling method. And designs some idiographic circuits including the step system which generates the step acquisition pulse and the sample-collecting gate circuit and so on, through the experiments show that the method is effective.

关 键 词：探地雷达 等效时间采样 步进采样脉冲 采样门 

分 类 号：TN959.71[电子电信—信号与信息处理]