The Research Of Intelligent Networking Protocol For Aircraft Swarms

The swarm combat system can improve combat capability at a lower cost,and is becoming one of the research emphases of many countries in recent years.Providing reliable information exchange between aircraft platforms is the basic guarantee for realizing this technology.In practical applications,the communication connection between aircraft platforms is often unpredictable,which determines that the system should have a center less intelligent networking feature.To improve the information interaction capability between aircrafts,this paper regards the aircraft swarms as mobile Ad Hoc network,and studies its networking protocol for its characteristics of no center,mobile,multi-hop,self-organization and large network size.And focus on the network layer protocol and link layer protocol to realize the self-organization of network establishment,network entry and exit and resource occupation.Firstly,the article makes a brief introduction of the research background,significance and research status of the swarm network,and then introduces two typical Ad Hoc network structures,Ad Hoc network hierarchical model and the functions to be implemented in each layer,laying the foundation for subsequent research.Aiming at the network layer,the clustering algorithm,routing protocol and how nodes enter and exit the network is designed in detail.For swarm network,clustering algorithm is used to divided the network into several interconnected clusters,quickly construct and maintain clusters that fully cover the entire network and better support channel resource management with minimal communication overhead.Select the active mode for nodes when enter the network to prevent them from being attacked and interfered at this stage.Design the scheme to meet the requirement of fast enter and fast exit.Designing routing protocols based on hierarchical network architecture to achieve efficient addressing of source nodes to destination nodes.The MAC protocol that applies to aircraft swarm network is designed based on the hierarchical network architecture.In order to prevent congestion caused by data bursting,TDMA with the service quality guarantee is used as the basic access method and its frame structure and the time slot assignment algorithm are designed.Frame structure is designed based on the service transmission requirement.The time slot assignment algorithm can schedule each node to implement collision-free transmission of data packets,which is the key to improving the performance of the TDMA-type protocol.This paper proposed a MAC protocol that combining fixed slot assignment and dynamic slot assignment to improve channel utilization and improve network performance.Simulate the network using the OMNeT++ simulation software,build the node model and the network model,and code the simulation kernel for the module of the network layer and the link layer to realize the module function and verify the protocol.First,set the scene to verify clustering algorithm,select a node as the network access test node,enter and exit the network frequently and record the delay.Finally,the time slot allocation algorithm considering slot reuse is simulated in several typical topologies and dynamic topologies.The simulation performance parameters are recorded and compared with the fixed allocation TDMA to verify that the protocol can improve network performance.