Radio channel simulations using multiple scattering center models

Abstract

A stochastic approach to model scattering effects of complex objects in comprehensive system simulation scenarios has been used in a simple and consistent way. In the given example the system simulation complexity is thereby reduced from appr. 100 000 triangles per vehicle object down to 80 triangles plus additional bistatic RCS table look-ups. Consequently, detailed deterministic analyses of radio channel signal variations can be carried out for critical communication or sensing systems in an efficient and accurate way. Significant deviations can be observed, as expected, particularly at the shadow boundaries for grazing incidence. It should be mentioned that for larger scenarios and rather low number of observation points a system level ray tracing instead of the ray launching is expected to bring performance benefits. Nevertheless, a good approximation of the results obtained with the much more complex polygonal models has been proven.