摘要
介绍了路面雷达电磁波在路面结构中传播的基本原理,结合时域有限差分法算法,分别分析一维FDTD方程、软激励源、分层介面的有效参数、吸收边界条件在应用实现模拟过程中的重要影响,并建立了空气耦合式路面雷达的正演模型.理论模拟和实际工程数值算例表明:该模型对路面雷达正演模拟是可行的,误差不超过2%.
ground penetrating radar (GPR), which is a rapid, highly efficient, continuous, and nondestructive tool, has been widely used in pavement testing and evaluation in recent years. In this paper, a forward air-coupled GPR model is established. This model is based on the basic theory of FDTD by analyzing the characteristics of electromagnetic wave tromagnetic wave propagation in pavement. Moreover, the validity of this forward model is proved by the results of several simulated and practical cases.
出处
《郑州大学学报（工学版）》
CAS
2005年第1期28-32,共5页
Journal of Zhengzhou University（Engineering Science）
基金
国家杰出青年科学基金资助项目(19625205)
河南省杰出人才创新基金资助项目(0321000800)
