Node And Link Reliability Modeling And Evaluation Algorithms For Command And Control Network

As the command and control network is the center of information collection and the issuance of directives in modern information warfare,the network reliability will directly affect the direction of the war.It is of great significance to ensure and improve the reliability of the command and control network system.This paper studies the command and control network system of a certain department.Meanwhile,this paper studies the characteristics of its network and the network topology.The research content of this paper mainly focuses on the network-reliability index system,reliability modeling,reliability evaluation of network system,reliability analysis of system node and network links reliability analysis.The content of this paper has a significance for the identification of vulnerable links in military operations and the optimization of military command networks.This paper studies from the following aspects:(1)According to the GJB 451A-2005 "Reliability Maintenance Warranty Terms" and the Command and Control Network,the general concept of the command and control network is defined by analyzing the five major elements of the reliability definition such as the research object,the specified conditions,the specified time,the specified function and the probability index.By analyzing the failure mode and mechanism of the command and control network,a method of establishing a reliability index system based on the top-down hierarchy of the related index system is adopted,and a reliability index system of the command and control network is constructed in this paper.(2)In this paper,FTA is used to establish a model for a two-terminal communication system of the artillery commander commanding the artillery command vehicle in the command and control network.Then introduce fault tree modeling methods and evaluation algorithms.Analysis of the artillery command vehicle commanding the duo to combat the failure modes and influencing factors in the two-terminal communication system,based on which qualitative analysis and quantitative analysis of the number of failures to calculate the reliability of the two-terminal system to achieve the specified function.Followed by the importance of sorting and analysis to find the weak link in the two-end system.(3)This paper builds a model and evaluates the reliability of Bayesian network based on the relationship between command and control network nodes.First of all,dynamic fault tree modeling is performed for the dynamic sequential logic relationship between the node cars.Then the quantitative analysis and qualitative analysis of the dynamic fault tree model are performed.Under the established dynamic fault tree model,it is converted into a Bayesian network and the reliability is solved.Finally,an actual command and control network example is given.(4)This paper analyzes the network link relibility in the command and control network.The corresponding modeling is based on the communication link path transmission loss.According to the environment of the command and control network communication system and other external factors,the reliability analysis and calculation of the network link are performed.