【摘要】 本文讨论了射线追踪法实现二维地电断面的探地雷达图像的正演合成问题,其中包括二维地电断面的数字拟合、多层连续界面介质中高频电磁波的反射与透射统一的运动学边界方程;根据Huygen’s-Fresnel原理导出了均匀介质中二维管状体模型的衍射雷达波的计算公式;给出了用射线追踪法合成的二维地电模型的探地雷达图像;用衍射波公式合成了二维管状模型的雷达图像,并与物理模拟作了比较.在此基础上,用Kirchhoff积分法对数字模拟与物理模拟记录的雷达图像作了偏移处理,并给出了实例.更多还原

【Abstract】 In this paper, some problems relating to the forward synthesis of ground penetrating radar (GPR) images of 2-dimensional geoelectric section were discussed, in which the-mathematical fitting of 2-dimensional continuous interface, the unitized kinematical equation of high frequency electromagnetic wave in multilayered medium with continuous interfaces were included; The formula for calculating diffraction radar wave of 2-dimensional pipe-like objects in homogenous medium was conducted based on Huygens’-Fresnel principle; The GPR image of 2-dimensional geoelectric sectional model was g iven sysnthesized by way of ray tracing; The GPR Image of 2-dimensional pipe-like model was synthesized using diffraction radar wave formula and compared with physical simulated record. Finally, Kirchhoff integral migration method was adopted to process the synthesized GPR record and the simulated one, and a example of migration processing was presented.更多还原