Modeling and Simulation of A2G Channel Based on UAV Array

Abstract

Based on the geometry of UAV(Unmanned Aircraft Vehicle)array, a three dimensional (3-D) geometric channel model is proposed for air-to-ground(A2G) communication environments. For the UAV scatterers, based on multipath clusters and assumptions about the distribution of scattering points, a multipath cluster-coruscate model is established. Under the condition that the coruscating points obey the normal uniform distribution, the probability density function of time delay, azimuth angle and elevation angle are derived. A simulation platform is also built to flexibly model the channel characteristic parameters of the UAV in various array formations and flight states. The simulation results have a good correspondence with the geometry of the array, and the channel characteristics can be effectively obtained by observing the simulation results. For 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sup> uniformly and normally distributed scattering points, the good matching is observed between simulation and analytical results.