Security Performance Analysis of Physical Layer for UAV Swarm Networks

摘要

The unmanned aerial vehicle (UAV) swarm is an important extension point of UAV technology development, and will be widely utilized in both military and civil fields for its swarm intelligence. This paper considers the design of two rate parameters, i.e., transmission rate and confidential information rate, and analyzes their impacts on security performance of physical layer. The physical layer security model of UAV swarm network is established by placing the eavesdroppers on the ground and assuming that they obey a homogeneous Poisson Point Process (PPP). The expression of the secrecy outage probability and the connection outage probability is derived firstly, then the secrecy throughput is maximized by carefully choosing the two rate parameters under the on-off strategy and the non-on-off strategy, respectively, and the influence of density of eavesdroppers on security performance is analyzed. The validity of the analysis is verified by simulation experiments.