Disambigution of Polarization Decomposition of Electromagnetic Wave in Case of Incidence or Scattering Along a Normal to Media Boundary in a Model of Radio Channel

Deterministic methods of modeling of real radio channels are based on models of physical theory of diffraction, which use decomposition of incident and scattered waves into vertical and horizontal polarization components. However, in case of incidence or scattering of wave along a normal to media boundary such decomposition becomes ambiguous, and a wrong decomposition leads to errors in radio channel characteristics forecast. This paper expounds the rule for disambiguation of polarization decomposition of wave, which provides correct estimation of channel characteristics.