Research On Cascading Invulnerability Of Command And Control Network Based On Intergral K-shell

The command and control network(C2 network)is the product of the information age and the new warfare form,which connects all the operational elements,and transforms information superiority into operational advantage.So,the C2 network is the key factor to win the war.C2 network shows the characteristics of heterogeneous nodes,multiple links,hierarchical structure,and so on.It has typical complex network characteristics.At the same time,the C2 network has become the primary target of the enemy attacks under the fierce confrontation environment,which put forward higher request to the invulnerability of C2 network.Therefore,it is of great theoretical and military value to carry out research on the invulnerability of C2 network.The C2 network is a kind of scale-free network,which has the characteristic of “robust yet fragile”,making the C2 network fragile very fragile when facing deliberate attacks.Furthermore,when considering the cascading failure of the network,attacking few keys nodes can easily cause the C2 network to be divided or even the whole network to crash.Therefore,identifying and protecting the key nodes of C2 network,as well as building a cascade failure model of C2 network become an important way to reduce the scale of cascading failure and improve the invulnerability of the C2 network.Based on this,this paper carries out the research on cascading invulnerability of C2 network based on intergral k-shell.The main contents are as follows:First,the relevant theoretical knowledge of C2 network is researched.Specifically,the basic characteristics of C2 network topology are analyzed,and the C2 network model is established.In addition,the k-shell and its improved algorithm are analyzed,and the cascading failure model of C2 network is researched.Second,the method for key nodes identification in C2 network is researched.The k-shell,a classical key nodes identification algorithm,has the disadvantage of low accuracy.So,this study proposed a method of the key nodes identification in C2 network based on integral k-shell(IKS).The algorithm proposed by this paper refines the process of k-shell decomposition of the network,and measures the importance of nodes with historical k-shell value and second-order neighbor degree.The IKS algorithm takes into account both the global and local information of nodes.The simulation analyzes the influence of key nodes on network performance,and the correlation between the criticality of the node and its spreading ability.The results show that IKS algorithm makes up for the low recognition accuracy of the key nodes by the k-shell decomposition method,and inherits its advantages of the low complexity.So,the IKS method has obvious superiority.Finally,the cascading failure model for C2 network is researched.Combining the hierarchical characteristics of C2 network structure,this paper establishes a cascading failure model of C2 network based on adjustable load reallocation.In particular,this model defines the node initial load based on the node's integral k-shell value and hierarchy,and proposes a strategy for adjustable load reallocation of failed nodes according to the real-time loading condition of the upper or same level neighbor nodes of the failed node.And the simulation results show that,by reasonably defining the initial load of nodes,and adjusting the load allocation tendency coefficient,we can significantly improve the cascading failure capability of C2 network.Compared with other cascading failure models,this model has strong invulnerability.