Advanced modelling of a borehole radar environment with the finite difference time domain method

[摘要] Over the last decade, as the mining industry of South Africa is movingto ever deeper mines, the borehole radar is becoming an increasingly importantfield of research.In December 2000, Burger completed his thesis on Electromagnetic Modellingof a Borehole Radar Environment with the FDTD Method. Thegoal of this thesis is to extend the research presented in Burger's thesis,considering how more advanced modelling techniques can be applied tothe FDTD analysis of the borehole radar environment.Some of these techniques include implementation of dispersive and conductivematerial models, and developing Uniaxial Perfectly MatchedLayer boundary conditions for matching these model. Simulations wererun to measure the performance of these boundary condition for matchingdispersive and conductive materials.The thesis also includes the implementation of a parallel version of theFDTD algorithm using the Message Passing Interface library.Finally several realistic borehole models where simulated to test the accuracyof the code and to show how the code can be used to model realworld problems.

[发布机构] Stellenbosch University