Combined with the electromagnetic wave propagation characteristics in multi-medium

the different influencing factors of electromagnetic wave propagation characteristics in rock and soil mass medium are analyzed. The waveform graph which is received through the receiving antenna is obtained. It can be seen that ground penetrating radar can detect the less dense and the cavity area intuitively and clearly through the application of ground penetrating radar to detect the grouting effect of the air-raid shelter. The application of ground penetrating radar is well

but it is a developing detection technique. A lot of practical experiences should be accumulated to deal with all kind of questions in probing process correctly and to obtain the exact results.