Using vertical and horizontal multipath models in radar simulations

This paper describes models for vertical and horizontal multipath effects, for use with radar simulations. The multipath effect takes place in radar scenarios close to the ground, when the direct ray waveform is interfered with forward reflections from surfaces near the radar or the target. The simplest and well known case is the ground multipath. Here the effect of buildings and walls perpendicular to the ground is also considered, and the total effect of both ground and walls multipath is accounted for. The models here use the image method, well known in mirror optics as well as in radar reflections, for computations. The use of this method is straight forward and well explained for the use of multipath phenomena, both vertical and horizontal, in simulations of radar scenarios. It is shown how to use multipath effects in the analysis of radar performance such as detection (received power) and monopulse angle measurement errors.