TY - EJOU AU - Fang, H. Y. AU - Liu, J. AU - Wang, F. M. TI - A Precise Integration Method for Modeling GPR Wave Propagation in Layered Pavement Structure T2 - Computer Modeling in Engineering \& Sciences PY - 2014 VL - 99 IS - 6 SN - 1526-1506 AB - Construction of electromagnetic wave propagation model in layered pavement structure is a key step in back analysis of ground penetrating radar (GPR) echo signal. The precise integration method (PIM) is a highly accurate, efficient, and unconditionally stable algorithm for solving 1-order ordinary differential equations. It is quite suitable for dealing with problems of wave propagation in layered media. In this paper, forward simulation of GPR electromagnetic wave propagating in homogeneous layered pavement structure is developed by employing PIM. To verify the performance of the proposed algorithm, simulated GPR signal is compared with the measured one. Excellent agreement is achieved. KW - ground penetrating radar KW - pavement structure KW - precise integration method KW - numerical simulation DO - 10.32604/cmes.2014.099.473