Interference Analysis for Coexistence of UAVs and Civil Aircrafts Based on Automatic Dependent Surveillance-Broadcast

Due to the advantages of high mobility and easy deployment, unmanned aerialvehicles (UAVs) are widely applied in both military and civilian fields. Inorder to strengthen the flight surveillance of UAVs and guarantee the airspacesafety, UAVs can be equipped with the automatic dependentsurveillance-broadcast (ADS-B) system, which periodically sends flightinformation to other aircrafts and ground stations (GSs). However, due to thelimited resource of channel capacity, UAVs equipped with ADS-B results in theinterference between UAVs and civil aircrafts (CAs), which further impacts theaccuracy of received information at GSs. In detail, the channel capacity ismainly affected by the density of aircrafts and the transmitting power ofADS-B. Hence, based on the three-dimensional poisson point process, this workleverages the stochastic geometry theory to build a model of the coexistence ofUAVs and CAs and analyze the interference performance of ADS-B monitoringsystem. From simulation results, we reveal the effects of transmitting power,density, threshold and pathloss on the performance of the ADS-B monitoringsystem. Besides, we provide the suggested transmitting power and density forthe safe coexistence of UAVs and CAs.