基于MED的探地雷达信号处理研究

Research on GPR Data Processing Based on Minimum Entropy Deconvolution

文中运用改进的最小熵反褶积(MED)理论,采用MATLAB编写程序,实现了改进的MED计算机自动处理功能。将其应用到在建中的某地铁4号线某区间的探地雷达资料处理中,较准确地确定了岩溶的位置和尺寸。将处理结果与钻孔岩芯资料进行比照,发现雷达探测结果与钻探结果具有较好的一致性,表明MED方法能在雷达剖面上有效显示溶洞位置,该项研究成果对类似工程具有重要借鉴意义。

Based on the improved minimum entropy deconvolution （MED） theory, a MATLAB procedure has been developed for automatic processing. Examples on processing the ground penetratin radar （GPR） data from some metro lines have been included. Analyses of the results show that predicted karst caves locations and dimensions were consistent with the drilling results, which indicate that the MED method can effectively highlight the locations and dimensions of caves on a radar profile. This method of processing GPR data may be used in similar geotechnical engineering work.