Physics-Based Coherent Modeling of Long-Range Millimeter-Wave Propagation and Scattering in Rain

Precipitation and in particular rain present a random medium with constituent particles having dimensions comparable to the wavelength at millimeter-wave frequencies. Due considerable scattering of waves from such particles, significant signal attenuation phase front aberration can take place which are important factors that must be considered modern communication system or radar design. This paper presents fast accurate numerical method for coherent modeling wave propagation media, like rain. In this approach, is divided into sufficiently large finite slabs each slab modeled as network multiple input/output ports where represent rays different polarizations propagating directions entering leaving slabs. The cascaded networks used find response any arbitrary source. proposed considers among all scatterers thus entire physics wave-particle interactions accounted for. addition, model both mean fluctuating parts medium. To demonstrate applicability method, it calculation specific media function rates frequency within band. results show good match available data literature.