路用探地雷达脱空检测参数研究  

Parameter Research of Ground Penetrating Radar on Detecting Cavity

作　　者：刘志声[1] 王乾[2] 万捷[2] 

机构地区：[1]西安电子科技大学,陕西西安710071 [2]长安大学公路学院,陕西西安710064

出　　处：《现代电子技术》2009年第20期163-166,共4页Modern Electronics Technique

摘　　要：天线的中心频率、分辨率等因素是影响探地雷达脱空检测精度和准确度的主要因素,以此为出发点,在解释探地雷达脱空检测工作原理的基础上,对天线的中心频率、分辨率、采样率等各参数的计算方法和适用范围进行了全面分析和系统研究:根据道路材料介电特性及路面结构尺寸确定了天线中心频率的上限,参考脱空量值资料确定了天线中心频率的下限和最小垂直分辨率,按照优化处理要求结合经典理论规律提出了采样率计算公式,并将研究内容实践于清连一级路,吉林外环路,烟威高速路三项依托工程中,取得了良好的使用效果。Both the central frequency of antenna and the resolution are chief factors influencing the accuracy of ground penetrating radar on detecting cavity. Considering it as the starting point, the methods of calculation and application for the parameters of central frequency of antenna, resolution and simpling frequency are analysed, and systematic research based on explaining the working principle of ground penetrating radar on detecting cavity. The upper limit of central frequency of antenna is recommended according to the dielectric property of road materials and the size of pavement structure. The low limit of central frequency of antenna and the minimal value of vertical resolution are determined by considering the data of cavity. The calculation formula of sampling frequency is presented according to the request of optimizing process with classical theory law. The contents are practised on attaching projects of Qingyuan-lianzhou highway,Jilin outer ring highway, Yantai- Weihai highway,achieving a good result.

关 键 词：探地雷达 脱空检测 中心频率 分辨率 采样率 

分 类 号：U141[交通运输工程] TP274[自动化与计算机技术—检测技术与自动化装置]