基于共偏移距GPR信号包络和三维速度谱分析的介质电磁波速度估计方法

周鑫, 王洪华, 王欲成, 吴祺铭, 王浩林, 刘洪瑞

A method for estimating electromagnetic wave velocities in subsurface media based on common-offset GPR signal envelope and 3D velocity spectrum analysis

ZHOU Xin, WANG Hong-Hua, WANG Yu-Cheng, WU Qi-Ming, WANG Hao-Lin, LIU Hong-Rui

图4 图3b去直达波后的GPR信号构建的三维速度谱 a—基于振幅的三维速度谱;b—基于振幅的速度谱切片;c—基于包络的三维速度谱;d—基于包络的速度谱切片

Fig.4 Three dimensional velocity spectrum constructed by the GPR signal in figure 3b after removing the direct wave a—three dimensional velocity spectrum based on amplitude;b—velocity spectrum slice based on amplitude;c—three dimensional velocity spectrum based on envelope;d—velocity spectrum slice based on envelope