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.
La méconnaissance des caractéristiques des matériaux (nature, épaisseur, structure, rugosité, …) est fortement préjudiciable à la qualité des prédictions du champ radioélectrique obtenu par des méthodes rigoureuses. De façon à pouvoir optimiser notre modèle basé sur l'Optique Géométrique et la Théorie Uniforme de la Diffraction exploitant les rayons obtenus par un tracé de rayon tridimensionnel (combinant réflexions, transmissions et diffractions), nous lui avons associé un algorithme génétique. Nous en avons évalué les performances après optimisation sur différents environnements indoor, et nous avons ensuite déterminé l'influence des différents paramètres du tracé de rayons sur l'acuité des prédictions et donc la connaissance de l'environnement de simulation.
Mots-clés : Tracé de rayons, Optique Géométrique, Théorie Uniforme de la Diffraction, Indoor, Algorithme génétique
Romain Matschek 1
@article{CRPHYS_2005__6_6_595_0, author = {Romain Matschek}, title = {A geometrical optics and uniform theory of diffraction based ray tracing optimisation by a genetic algorithm}, journal = {Comptes Rendus. Physique}, pages = {595--603}, publisher = {Elsevier}, volume = {6}, number = {6}, year = {2005}, doi = {10.1016/j.crhy.2005.07.001}, language = {en}, }
TY - JOUR AU - Romain Matschek TI - A geometrical optics and uniform theory of diffraction based ray tracing optimisation by a genetic algorithm JO - Comptes Rendus. Physique PY - 2005 SP - 595 EP - 603 VL - 6 IS - 6 PB - Elsevier DO - 10.1016/j.crhy.2005.07.001 LA - en ID - CRPHYS_2005__6_6_595_0 ER -
Romain Matschek. A geometrical optics and uniform theory of diffraction based ray tracing optimisation by a genetic algorithm. Comptes Rendus. Physique, Interaction of electromagnetic fields with the environment, Volume 6 (2005) no. 6, pp. 595-603. doi : 10.1016/j.crhy.2005.07.001. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2005.07.001/
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