Effectiveness Evaluation Analysis Of UAV Relay Transmission System

With the development of wireless communication technology,UAV as an emerging technol-ogy has attracted widespread attention in the military and civilian fields.Due to the advan-tages of easy deployment and low cost of drones,its application as a communication relay platform has become more and more extensive.Therefore,in order to choose the best re-lay solution to complete the transmission task,a systematic and comprehensive evaluation of drones The transmission efficiency of the relay system has become particularly important.In addition,in view of the UAV’s light weight and susceptibility to damage,its anti-interference ability must be considered.Therefore,it is necessary to consider the existence of jammers and terrain factors when establishing the UAV relay transmission model.Starting from the development status of UAV as a relay transmission node,this paper applies effectiveness evaluation to UAV relay system,and conducts in-depth research on the establishment of UAV relay transmission model,index system establishment,and effectiveness evaluation.Analysis,research and simulation,the main work is as follows:(1)Summarize the existing UAV communication technology and relay communication tech-nology,analyze the basic architecture of UAV communication network,understand the con-cepts of link and channel in the network? Understand common performance.It also analyzes the basic structure,advantages and disadvantages of various UAV relay schemes,and pro-vides a theoretical basis for the subsequent design of UAV relay transmission model? It also includes an overview of effectiveness evaluation and classification and analysis of main-stream effectiveness evaluation methods,which provide a prerequisite for the later estab-lishment of effectiveness evaluation calculation models.(2)Construct a model of the UAV relay system.In order to consider the real scenario of UAV relay application,based on the analysis of the existing UAV relay model,a UAV relay transmission model considering the jammer environment is established,and network simulation tools are used.Carry out the simulation of the model,show the interference caused by the jammer to the UAV transmission signal through the simulation,and set up different relay schemes to obtain the performance analysis results of the relay system under different relay schemes,which are basically consistent with the expected results,That is,when the interfering drone exists,the direct transmission link will cause great interference to the signal,and the addition of the drone as a relay node and the correct selection of the relay scheme will make the relay performance obvious improve.Therefore,the simulation results verify that the selected performance indicators are representative and reasonable as the basis for relay selection and illustrate the necessity of establishing an effectiveness evaluation model for the system.(3)Construct a system effectiveness evaluation model and establish a relay selection plat-form based on effectiveness evaluation.In order to comprehensively and systematically evaluate the effectiveness of the UAV relay transmission model,based on the analysis of the performance indicators of almost all relay transmission systems in the existing research,they are classified and classified according to common for channel parameters in complex environments with different terrains,establish calculation formulas for indicators including received signal strength,signal-to-noise ratio and cost.Through the established weighted performance evaluation calculation model,qualitative indicators are quantified to obtain per-formance values.The performance value quantitatively evaluates the system performance.And through simulation,observe the performance of each relay program under different ter-rains.The simulation results verify the correctness of the selected indicators in the proposed performance evaluation calculation model.The average performance values of different pro-grams obtained through simulation are combined with the cost index obtains the efficiency-cost ratio of different relay schemes,and the optimal relay scheme is selected by simulation.The simulation results verify the rationality and effectiveness of the relay scheme selection platform based on this efficiency evaluation model.