A geometrical optics and uniform theory of diffraction based ray tracing optimisation by a genetic algorithm

Lack of knowledge of the material properties (medium, thickness, structure, roughness....) has a strongly negative impact on the quality of the radioelectric field predictions obtained by rigorous methods. In order to be able to optimise our model based on Geometrical Optics (GO) and Uniform Theory of Diffraction (UTD)-exploiting the rays obtained by a three-dimensional ray tracing (combining reflection, transmission and diffraction)-we associate a genetic algorithm (GA) to it. We evaluate their performances after optimisation on a typical indoor environment, and then we determine the influence of a few ray tracing parameters on the prediction accuracy and thus the knowledge of the environment of simulation.