Research On Distributed Decision-making Networking Methods Of Shipborne Aircraft Offshore Mission Formation

In recent years,shipborne aircraft formation is gradually becoming an important tactical weapon for future naval ships to enhance combat capability and deal with complex war situations.In the trend of modern war systematization,informatization and networking,it is of great significance to carry out the research on related technologies.However,in low altitude environment,natural terrain and other factors will interfere with the communication of aircraft formation;The characteristics of random spatial distribution and real-time movement of network topology nodes also make it difficult for centralized control network to be popularized and applied.Various communication constraints often make the nodes in aircraft formation lack important routing information,which challenges the construction of a complete communication network topology.In view of the above problems,this thesis studies from the following aspects.First of all,based on Unity platform,this thesis simulates the distributed network environment which supports multi computer interaction state information by combining remote control and observer mode.In order to ensure the real-time communication between aircraft nodes,the active routing strategy is selected.In the aspect of node processing received information,this thesis implements Dijkstra,Bellman-Ford,SPFA and Floyd algorithms,improves Bellman Ford and SPFA algorithms based on the research background,and compares the time complexity of the four algorithms.Then,in order to simulate a more realistic situation,this thesis takes the limited broadcast range and mountain blocking as the communication constraints.For the lack of node information,in the aspect of routing calculation,this thesis implements AStar algorithm to calculate the spare path,and solves the loop problem by designing a new structure.Furthermore,on the premise of calculating prior knowledge,this thesis compares the time complexity of different shortest path algorithms and astar algorithms;In the aspect of routing strategy,the instruction transmission function is designed,based on which the routing switching and routing discovery strategies are supplemented.In order to improve the efficiency of information utilization,this thesis adds neighbor node interception for routing exchange,and uses the idea of path reversibility to control the transmission process of response messages to reduce the network overhead of routing discovery;In the aspect of motion control,this thesis defines and designs the behavior of the aircraft based on the behavior method and the idea of virtual structure method,and realizes the automatic flight control of the aircraft through the minimum number of connections.Finally,this thesis integrates the main algorithms and builds a simulation system based on unity platform to support multiple computers synchronous demonstration.Furthermore,in order to improve the demonstration effect,this thesis designed the information visualization UI,topology connection and other demonstration auxiliary functions.Through the simulation demonstration,this thesis verifies the distributed network environment,and also proves the effectiveness of various missing information supplement schemes in small-scale formation.