Design And Verification Of The Key Technology Of UAV Data Link

As one of the key elements of information warfare,data link provides solutions for communication between heterogeneous systems.Message standards and transmission protocols,as the key technologies of data link,effectively solve the communication problems between different platforms.With the gradual diversification of UAV functions,UAVs are being more and more widely used in military and civilian fields.In this thesis,message standards and transmission protocols in data link are studied in the context of UAVs to solve the problem of UAV interconnection and interoperability.First,this paper introduces the development status of UAV communication systems at home and abroad,and points out the technical difficulties that need to be solved to realize UAV interconnection through the analysis of UAV communication system architecture and communication protocols.Then,the development and research status of data chain is introduced,and the message standards and transmission protocols related to the UAV communication system in the key technologies of data chain are analyzed.In order to realize the unified message format and the real-time reliable transmission of data in the UAV communication system,this thesis investigates the message standards and transmission protocols in the data link to designs the UAV communication system based on variable message format.First,this thesis studies the two technologies of message standards and transmission protocols,which are widely used in data link,and analyzes and designs the technical solutions applicable to this system in conjunction with the actual needs of the application scenario of UAVs.Then,the system is modeled with the business requirements in UAV actual communication to simulate and test the communication performance indexes.At last,the feasibility analysis of the technical solution of the system is completed.In order to verify the performance of the UAV communication system in practical applications,designing and implementing each module of the UAV communication system in this thesis.The system consists of ground control terminal and the UAV terminal,which mainly realizes the functions of data transmission between the ground control terminal and the UAV terminal,flight control of UAV by ground control terminal,UAV situational information return and video information transmission.Finally,according to the system design objectives,the actual flight of the UAV is used as the test environment to complete the functional test and communication performance test of the system.The test results show that the UAV communication system designed in this thesis has the characteristics of stability,low latency and low packet loss rate,and can better complete the real-time and reliable communication between the UAV and the ground control terminal.