Research On UAV Air Traffic Control Key Technologies Based On 4G Mobile Network

In recent years,uav technology has been widely used.With the rapid development of science and technology,the cost of uav has been decreasing continuously.As the demand for uav applications increases,how to manage the rapidly growing number of drones is an urgent problem to be solved.With the advent of 4G mobile networks,the use of 4G networks to control drones will become a new mode of accusation.The combination of uav technology and 4G network will enable the uav system to get a big upgrade.However,using 4G mobile communication network as the data link of uav and traditional uav data chain control uav has certain mechanism and characteristics difference.These differences will have a great impact on remote control management in uav air management and the path planning of uav.This article focuses on two aspects:Introduce the measurement and control communication system in uav system,the transmission layer in the network protocol layer is used to analyze the influence of time delay in 4G mobile network on the measurement and control function of uav system.Some tests and analysis are carried out on the 4G mobile network,and design meets the requirement of transmission delay model.Using ARMA model and GMDH neural network to predict the transmission delay of uav,the predicted time delay is introduced to realize the compensation of uav status and position,this will improve the ability of ground operators to remotely operate uav.In order to ensure efficient and real-time transmission of data information,UAV carries out route planning before flight.Based on the signal coverage strength of 4G mobile network,a route planning model based on arc benefit is established.At the same time,the corresponding algorithm for solving the problem is found out,Overall consideration is given to the needs of route planning,Combining local iterative search algorithm and probabilistic map two algorithms to solve the route planning problem of uav under mobile communication network.This paper mainly solves the problem that the 4G mobile communication network as the uav transmission control data link has large delay fluctuation,accomplish remote control of UAV by 4G network,At the same time,4G mobile network is used to effectively plan the route of uav,it provides a theoretical basis for UAV to realize unified management and control under the public network.