基于FDTD的探地雷达典型形状目标二维散射仿真  

Two-dimensional Scattering Simulation of Typical Shapes of Ground Penetrating Radar Targets based on FDTD

作　　者：李文博 韩雅菲[1] 贺丽萍[1] 陈闯[1] 常孟周 郭凯[1] LI Wen-bo;HAN Ya-fei;HE Li-ping;CHEN Chuang;CHANG Meng-zhou;GUO Kai(School of Equipment Engineering,Shenyang Ligong University,Shenyang 110159,China)

机构地区：[1]沈阳理工大学装备工程学院,辽宁沈阳110159

出　　处：《装备制造技术》2021年第3期89-92,共4页Equipment Manufacturing Technology

摘　　要：探地雷达以其无损、高效、使用灵活、分辨率高等优势在工程物探领域得到了广泛应用,研究探地雷达回波的正演数值模拟将有利于提高对探测目标解释的精度和准确性。采用时域有限差分法和完全匹配层边界条件建立了探地雷达正演模拟方程,利用该方程对地下层状结构、矩形模型和球状模型的进行了正演模拟,结果表明:建立的数学模型可以实现探地雷达典型形状目标的二维散射回波模拟,利用其算法将为提高雷达回波图像解释的精度和准确性提供理论参考。GPR has been widely used in the field of engineering geophysical exploration because of its advantages of lossless,high efficiency,flexible use and high resolution. The forward numerical simulation of GPR echoes will be beneficial to improve the accuracy of detection target interpretation.Using the finite difference time domain method with perfectly matched layer boundary condition GPR forward modeling equation was established,and the underground structure,rectangle model and the spherical model were simulated. The results show that the established mathematical model is feasible for two-dimension scattering echo simulations of typical targets,the algorithm will provide a theoretical reference for improving the accuracy of radar echo image interpretation.

关 键 词：探地雷达 时域有限差分法 二维散射建模 

分 类 号：TN953[电子电信—信号与信息处理]