Evaluation device for the cavum under the pavement of a road and method thereof

摘要

According to an aspect of the present invention, there is provided a dielectric constant change outputting section (10) for outputting a dielectric constant for each medium under a road pavement layer by amplitude of an electromagnetic wave reflected after electromagnetic waves are vertically transmitted to a ground layer of a road, The amplitude of the electromagnetic wave reflected by each medium is compared with the amplitude attenuation of the reference medium to calculate the depth of each medium corresponding to the amplitudes of the electromagnetic waves having different strengths, And a data output unit (30) for mapping and displaying data related to the cavity output by the cavity determination unit (20). The cavity determination unit (20) An evaluation device is provided.