Secrecy Analysis for Spatially Random UAV Systems

Abstract

In this paper, an unmanned aerial vehicle (UAV) to ground communication system with spatially random eavesdroppers account on both ground and airspace is considered. UAV tries to transmit information to a legitimate receiver on the ground while a group of eavesdroppers on the ground and another group of eavesdropping UAVs in the airspace try to overhear the delivered information. The locations of all terminals are randomly distributed in the coverage space of the source UAV. The statistical characteristics of the received signal-to-noise ratio at all terminals considering two kinds of communication environment are characterized. The analytical expressions for secrecy outage probability are derived. Finally, simulation is carried out to verify the correctness of our analytical model.