Synthesizing GPR returns using body of revolution FD-TD method: initial results
We investigate and validate methods to generate synthetic GPR returns for the purpose of numerically determining the scattered fields from buried land-mines in stratified and cluttered media. A Body-of-Revolution Finite Difference Time Domain method is implemented to simulate data for testing detection algorithms. The BOR approach is well equipped to model layered soil conditions. Fortunately, a large proportion of abandoned landmines in the world today have a rotationally symmetric structure. The BOR method introduces a transversely polarized plane wave that is directed along the axis of rotation. This represents the typical case where the GPR is aimed directly over the buried mine. Furthermore, the incident field is given a Gaussian spatial weighting away from the axis of rotation to model real world radiation effects.