Research On Dynamic Networking Of Scale-Free Network

With the great development of information technology, network centric warfare is more and more preponderant and important in the future high-tech warfare. Through radar network which can realize the information sharing of multi-station, set up flexible and effective network, network centric warfare can exert advantages of group warfare, and it is an efficient way to suit the future battle. The emphasis of this paper studies the relevant technologies about radar dynamic network, including the choice of network topology and the research of optimization, recovery scheme of the network and routing algorithm. It will establish the base theory for the development of network dynamic on complex information fusion system.Firstly, we analyze the evolvement of complex network and dynamic characteristic of different network models. According to the performance demand of radar group network, we choose scale-free network as the topology structure. Then taking into account node's position, performance difference, and local world theory, we improve on the BA mode and get the optimized IE model. It validates the superiority of the expanding mode by simulated experiment.Secondly, from the point of view of Information Theory, we study the capability of scale-free network to resist random attack. We use entropy of degree distributing to describe the error tolerance capability. At first, we calculate the entropy of degree distributing with exceeding percolation theory. Then we get the optimization entropy using Genetic Algorithm in constraining condition. Therefore, we educe the relation between entropy of degree distributing and every parameter of network. It will provide basis for designing scale-free network with high error tolerance capability network.Thirdly, we study the capability of scale-free network to resist target attacks, analyze the fragility of scale-free network. When cluster nodes are destroyed, we provide the dynamic repair method in detail and prove it strictly in theory. Lastly, it can recover connectivity of network and power rule characteristic by simulated experiment. Lastly, we analyses the characteristic demand of radar networking to routing algorithm. Because the nodes bear lots of database package transmission function in scale-free network, it is possible to lead congestion. Aiming at the small average shortest path and topology non-homogeneity characteristic of scale-free network, we provide a traffic awareness routing algorithm. This routing algorithm can reduce the time delay and mitigate the congestion.