A geometric air-to-ground radio channel model

Presents a geometric channel model for simulation and analysis of air-to-ground radio communications. The model represents an airborne station communicating with a ground station in a cluttered environment (e.g., ground-based, mobile transceiver in an urban or village region). The model call be used to produce multipath component delay, strength, and direction of arrival (DOA) information, and it is therefore well suited for simulating vector channels for smart antenna arrays and antenna diversity systems. This air-to-ground channel model is based on a three-dimensional ellipsoidal geometry and uses principles similar to those used by the geometrically based single-bounce elliptical (GBSBE) and geometrically based single-bounce circular (GBSBC) models. However, instead of assuming two ground-based stations, this geometric air-to,ground model uses altitude and range information. The result is the ability to simulate multipath air-to-ground channels with a geometry more appropriate for the physical configuration of the stations.