LAUSR

For Ground-penetrating radar (GPR) image and the digital panoramic image obtained from single-hole measuring, a novel and noncooperative measuring method for quantitatively calculating the relative dielectric constant of geo-bodies based on information fusion of the two types of image is proposed. Structural plane tilt angle in borehole optical image and GPR image is extracted to calculate the permittivity and quantify the geological medium properties. The vertical stratification characteristics of geo-bodies can be obtained through the analysis of changing dielectric constant. Experiment with borehole optical and GPR images in this letter reveals the continuity and discontinuity of medium change. It confirms that there are many kinds of layered structures in shallow geology, such as soil, clay, sand with different water content, crushed stone, shale, and solution cracks with varying degrees of development. On the contrary, the values of permittivity of materials in deep geology have slight variation, and it indicates that the deep geological vertical stratification characteristic is relatively simple. The method provides a new and efficient means of dielectric constant calculation and vertical stratification characteristics analysis, especially for complex shallow geology in engineering applications.