Research And Verification Of Key Technologies Of Unmanned Aerial Vehicle High Definition Video Wireless Transmission

With the popularity of UAV applications,UAV HD video transmission technology has become a rising concern.As one of the most important part of the application of unmanned aerial vehicles,HD video can finish the whole course of HD video acquisition to real-time display on the ground,making the UAV become more effective to complete more complex tasks in the air.As a result of the UAV market is becoming more and more hotly,and the development of embedded technology and communication technology,UAV HD video transmission technology gradually from a single functional requirements,toward the low latency,high-definition direction.In this paper,UAV HD video transmission is embedded in software needs and combined with the communication link of team.What's more,this paper design and realize HD video transmission model,and verify the feasibility of the scheme.The main work of the paper is as follows:Firstly,the research status of HD video codec technology and transmission technology is studied.HD video codec technology focuses on the new H.265 coding standard.By compare H.265 coding standard with the previous generation H.264 coding standard,this paper highlight the superiority of H.265 coding standard as UAV HD video transmission coding.Then,this paper introduce the H.265 encoder structure briefly and its basic internal coding details.Secondly,this paper carry out the demand analysis of UAV HD video transmission model and analyze its hardware structure,software overall structure and link interface.The requirements analysis is carried out from the three aspects,which are scene,function and performance.Then,the whole model is described from the three levels of hardware,software and link interface,focusing on software.The whole model is divided according to demand.Thirdly,this paper design and achieve UAV HD video wireless transmission scheme according to the division of modules.Combined with the previous needs analysis and software architecture analysis and planning,this paper implements the various functional modules.The modules include UAV video transmission machine-side function module,ground-side function module and communication transmission interface module.Finally,the overall model scheme is tested and verified.The test verification process starts from the aspects of transmission function and transmission performance,testing the implementation and analyzing the test results.In this paper,key technologies of UAV HD video wireless transmission model were studied and verified,using the latest H.265 video coding technology and self-developed UAV video transmission link.This paper provides a reference for the development of UAV HD video wireless transmission technology.