A three components model for simplified building scattering in urban environment

Multipath represents a common predominant and uncontrolled component on channel impairments for land mobile satellite communication and navigation systems. Delayed signal replicas highly impact performances on communication systems while they induce strong positioning errors for navigation systems. The actual trend is to improve multipath wideband representation by using hybrid physical-statistical channel simulator instead of narrowband statistical approaches. In this context, this paper presents a new simplified model - Three Component Model - to represent building scattering in an efficient way which strongly improves time performances. This model is based on a fast formulation of Physical Optics to model specular reflections, backscattering and incoherent scattering from complex façades.