Permittivity evaluation for a vertically stratified soil using a GPR antenna

A simple technique for contact measurements of the dielectric permittivity of subsurface is suggested and experimentally verified. The technique can be easily combined with GPR measurements and allows constant monitoring of the dielectric permittivity of the subsurface at all points of GPR measurements. The technique has been verified using a resonant coaixial probe as a reference sensor. Values of the dielectric permittivities determined by both sensors are found to be in a god mutual agreement.