摘要
本文首先讨论了用射线追踪法实现二维地电断面的GPR剖面的正演合成的有关问题,其中包括二维GPR界面的数学拟合,高频电磁波在具有连续界面的多层介质中的反射波与透射波的统一的运动学边界方程,以及实现射线追踪的具体步骤。同时也讨论了用绕射叠加法合成GPR图象的基本理论,导出了计算二维管状绕射源的二次辐射场的基本公式,最后给出了4种模型的正演GPR记录。
In this paper, firstly, some problems are discussed in detail concerning forward synthesis of GPR profiles of two-dimensional (2-D) geoelectrical section with ray tracing method, including mathematical fitting of 2-D GPR interface, the unitized kinematical e-quation of high frequency electromagnetic wave propagating in multilayered medium with continuous interface, and the detailed procedure of ray tracing used for synthesizing GPR image with diffraction stack method. Meanwhile the basic formula is conducted to calculate the secondary radial field of 2-D pipe-like diffractional resource. Finally, the forward records of four types of models are presented.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1993年第3期285-293,共9页
Earth Science-Journal of China University of Geosciences
基金
国家自然科学基金
关键词
探地雷达
图象
正演合成
电磁波
GPR image, forward synthesis, ray tracing, high frequency electromagnetic wave, kinematical equation, diffraction stack.
