This paper investigates diffraction around building corners in non line-of-sight vehicle-to-vehicle scenario at a typical urban street intersection. Diffraction from building corner depends on several geometrical parameters. Mobile vehicles moving towards a street intersection cause rapid changes in these geometrical parameters. The effect of varying geometrical parameters along with dependence of reflection coefficient on material constitutive parameters, angle of incidence and surface roughness causes the Diffraction coefficient to change differently for different building materials. The combined effect of varying Diffraction coefficients for all the corners in a typical urban street intersection is investigated. The results show that total diffracted power from materials with rough surfaces may become comparable to power from perfect electrical conductor near the street intersection.

本文研究了典型城市街道交叉口的非视线车对车场景中建筑物拐角周围的衍射。建筑物角落的衍射取决于几个几何参数。驶向街道交叉口的移动车辆会导致这些几何参数发生快速变化。不同的几何参数以及反射系数对材料本构参数、入射角和表面粗糙度的依赖性的影响导致不同建筑材料的衍射系数发生不同的变化。研究了典型城市街道交叉口中所有拐角处不同衍射系数的综合影响。