Calibration of a 3-D ray-tracing model in railway environments

Abstract

A three-dimensional ray-tracing model is calibrated using measured data from railway environments. First, the input geometry is extracted by systematically adding incremental details that result in significant deviations in the simulated received power. Then, sensitivity analysis is performed to ascertain optimal values for the uncertain input parameters. The input parameters obtained by this procedure lead to a good agreement between the simulated and measured data, highlighting the importance of the calibration process.