To cope with the problem that the distribution assumptions of arrival angle and departure angle in existing geometry-based stochastic modeling (GBSM) for the unmanned aerial vehicle (UAV) air-to-ground (A2G) channel are too ideal to describe the spatial statistical property of the UAV A2G propagation environment precisely. considering the three-dimensional (3D) cylindrical A2G channel... https://cosmeticssquadets.shop/product-category/skin-cream/