Research On Key Technologies Of Uav Sensor Network Protocol In High Dynamic Environment

Unmanned aerial vehicle(UAV),as a new type of physical transport and information media,has gradually attracted wide attention from all walks of life in recent years.As one of the important applications of UAV,air sensor network has a wide application prospect.According to the networking characteristics of UAV sensor networks,this thesis studies and designs methods and protocols to improve networking efficiency.The research contents of this thesis are as follows.1)Firstly,this thesis studies the neighbor discovery strategy of UAV sensor network.Based on the network of UAV sensors in three-dimensional environment,considering the topology changes caused by the high mobility of UAV,a neighbor discovery strategy based on two handshakes is proposed.Considering the trade-off between energy consumption and efficiency,the sleep state is increased for the UAV,and the optimal sleep probability is obtained by solving the optimization problem.Using Maerkefu process to analyze and calculate the best sending probability,the efficiency of neighbor discovery is improved.2)Based on the research of multiple access protocol,this thesis proposes a UAV network multiple access protocol with storage-carry-forward and multi-hop transmission modes.In order to ensure the efficiency and fairness of the multi-access process,different priority and priority access slot sets are set in the designed multi-access protocol.Through the analysis of the relationship between network distribution and delay tolerant communication opportunities,the idea of switching between the two transmission modes of the protocol is provided.3)Finally,this thesis studies the networking method of UAV sensor networks based on radar communication integration.An integrated S-ALOHA multi-access protocol based on S-ALOHA is improved on the premise of radar communication waveform integration.The feasibility of the protocol is realized through reasonable design,and radar information is used to assist multi-access.The performance superiority of the protocol is verified by simulation analysis.