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oa Comparison of Absorbing Boundary Conditions and Numerical Modeling of Electromagnetic Wave for Multi Component GPR
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, The 9th International Symposium on Recent Advances in Exploration Geophysics (RAEG 2005), Mar 2005, cp-415-00005
Abstract
In this paper, numerical modeling of electromagnetic (EM) wave for multi component GPR is developed. For numerical modeling, the FDTD (Finite Difference Time Domain) method is used. In the accurate wave propagation modeling, efficient absorbing boundary condition is very important. The perfect matched layer (PML) and Cerjan's absorbing condition is compared. The result shows PML is more effective than Cerjan's one. The EM reflected waves are simulated with two different antenna arrays with varying structure. The results indicate that multi component GPR obtains more information than conventional one component GPR.