In the literature, I have seen path-loss models, e.g., air-to-ground (ATG). Such models obtain received power by using: Pr=Pt-PL. However, none of these models provide the method to obtain 'H'.
I am interested to obtain 'H' using UAV communication environment. For instance, 'H' must be the combination of line-of-sight (LoS) and non-LoS (NLoS) components.