Abstract
A cross-correlation envelope method which generates a model fitness from a reflected wave is used as pre-process for an image reconstruction. The range of the model fitness is normalized from zero to one because the effect of various attenuation is reduced by the corss-correlation envelope method. The image reconstruction method based on the micro-mirror model, or Phong model, for GPR is newly proposed. A subsurface image with tangential information of a boundary between a buried object and soil, which is useful to recoginize the shape of the object, is generated by the proposed method. measurement waves are classfied with antennas arrangement based on the position and the orientation of the micro-mirror. The model fitness generated from classfied waves are synthesised. Three types of synthesis method are introduced; an arithemetic average, a geometric average, and a harmonic average. In this work, experiments of steel plate detection are demonstrated to present a effectiveness of proposed method. As the result, inclination angles of buried steel plate are detected by proposed method with the tangential information.
