Title :
A novel ray-optical approach to model wave propagation in curved tunnels
Author :
Didascalou, D. ; Döttling, M. ; Zwick, T. ; Wiesbeck, W.
Author_Institution :
Inst. fur Hochstfrequenztech. und Elektron., Karlsruhe Univ., Germany
Abstract :
In this paper, a novel ray optical approach is presented to model the electromagnetic wave propagation in curved tunnels with rectangular or arched cross-sections. The modelling is performed by a stochastic ray launching technique (Monte-Carlo method), based on geometrical optics. Due to the curved surfaces, a so-called ray density normalisation is introduced in order to predict the field strength precisely. The model is verified theoretically with a corrugated circular waveguide and by various measurements at 120 GHz in scaled tunnel models
Keywords :
Monte Carlo methods; circular waveguides; millimetre wave propagation; prediction theory; ray tracing; stochastic processes; 120 GHz; Monte-Carlo method; arched cross-sections; corrugated circular waveguide; curved tunnels; electromagnetic wave propagation; field strength prediction; geometrical optics; ray density normalisation; ray-optical approach; rectangular cross-sections; scaled tunnel models; stochastic ray launching technique; wave propagation model; Corrugated surfaces; Electromagnetic modeling; Electromagnetic propagation; Electromagnetic waveguides; Geometrical optics; Optical propagation; Optical surface waves; Optical waveguides; Solid modeling; Stochastic processes;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.797351
