
There are various equipment used in geophysical surveys. Among those equipment is the so-called Ground Penetrating Radar (GPR). The GPR, which uses radio waves, is capable of detecting soil profiles at any depths depending on the radio frequency that is being used. Higher frequency GPR is more accurate in the detection of the profile but it is only used at shallow depths while the lower frequency GPR is capable of detecting at greater depths but it has lesser resolution output of the profile. The main concept of the detection is that the radio waves are reflected back once they hit different kinds of material having different values of di-electric constants as functions of time. It has various applications in different fields such as mine detection, buried utility detection, sub surface profile detection, rebar detection in concrete slabs, deterioration defect detection, void detection and many others.



