探地雷达速度参数的求取方法

Calculation methods to speed parameter of ground penetrating radar

探地雷达的传播速度反映介质电磁性质的变化情况,雷达记录的是来自目标体反射回波的双程走时,速度在时深转换过程中起着重要的作用,在资料处理中也经常要利用速度参数,因此速度参数的求取至关重要。文中根据已知几何尺寸的混凝土试件,结合采集的数据,详细地介绍了5种速度参数的求取方法,并指出这5种方法在实际工程中相应的适用条件。

The transmission speed of ground penetrating radar reflects the electromagnetic nature changing of media. Radar records the two-way travel time from the target reflection and the speed in the time-depth conversion process plays an important role. In the data processing, speed parameter is often used. Therefore, speed parameter is important. With known geometry of the concrete samples and the collected data, profound details on the five kinds of speed parameter calculation methods, and proposals corresponding conditions of engineering application are presented in the paper.