The Study On Clustering And Intra-cluster Connctivity Of UAV Swarm Under The Cooperation Of Wireless Ultraviolet

Wireless ultraviolet(UV)has the advantages of anti-interference,low eavesdropping,and all-weather work.It can provide reliable guarantee for the communication between unmanned aerial vehicles(UAVs)in strong electromagnetic interference environment.Since the communication energy consumption and network connectivity among UAVs affect the communication quality of UAVs all the time,this paper applies the clustering mechanism under the distributed structure of the leader-follower based on the UV stealth communication to study the energy balance algorithm under the clustering model of UAV swarm.The cluster head in a cluster is regarded as a virtual leader to study the conditions required for the UAV swarm in the cluster to maintain real-time k-connectivity,which can lay the foundation for UAV network to realize real-time and reliable communication under the cluster topology.The main research contents of this paper are as follows:(1)Aiming at the issue of energy consumption when UAVs communicate with each other,an energy consumption balance algorithm for wireless UV cooperating UAVs communication under clustering topology is proposed.Based on the distributed structure of the leader-wingman model,the clustering mechanism is proposed based on the low energy adaptive clustering hierarchy(LEACH),the staged optimization algorithms CH Opt,Transmit Opt and staged combination optimization algorithms LEACH Opt algorithm are proposed respectively.And simulations on different network performances with different algorithms are made.The simulation results show that the performance of the three optimization algorithms are better than the LEACH algorithm,and compared to the LEACH algorithm,Three key survival periods of the network under the LEACH Opt algorithm extended by 62%,44%and 37%,respectively.(2)Under the clustering model of UAVs network,UAV network is usually divided into multiple clusters,and studying the connectivity within a cluster can lay the foundation for the whole connectivity of UAVs network.The k-connectivity characteristics of wireless UV communication(UV-C)with On-Off Keying and Pulse Position Modulation are simulated under uniform distribution and random waypoint(RWP)distribution of UAVs in a cluster.Aiming at the dynamic distribution of UAVs,a k-connectivity analytical model is established and integration by parts approximation method is proposed.The simulation results show that the change regulation of k-connected probability with parameters under dynamic network is consistent with the uniform distribution of UAVs.Furthermore,the k-connected probability converges to 1 under the integration by parts approximate method much faster than Poisson intensity approximate method,thus the correctness and effectiveness of the approximate model are verified.In conclusion,clustering mechanism is applied to achieve the balance of communication energy consumption and the connectivity of inter-cluster for UAV network is studied based on UV communication in this dissertation,which can provide the reliable guarantee for the inter-aircraft communication of UAVs.