Research On The Deployment Technology Of Distributed Electronic Warfare Nodes

Focusing on the challenges of complex and changing electromagnetic environment,as a new development direction of electronic warfare,distributed electronic warfare network has received more and more attention.As one of the key technologies of distributed electronic warfare network,the electronic warfare node deployment technology is of great significance to realize the electromagnetic environment perception,cooperative reconnaissance,cooperative positioning,cooperative attack and the improvement of the network life cycle.On the basis of expounding the research background and current situation of distributed electronic warfare network and analyzing the theoretical knowledge involved in the deployment technology of distributed electronic warfare network nodes,the dissertation clarifies that the research goal of the dissertation is to research the battlefield wireless communication network based on the central nodes.And it is used as the research background to study the distributed electronic warfare network node deployment technology.Firstly,based on the signal transmission characteristics of the battlefield wireless communication network with the central nodes,the dissertation puts forward the concept of the key area of electronic warfare node deployment in the electromagnetic coverage area of enemy battlefield.A central nodes coverage estimation and key area determination algorithm based on SVR-Kriging is proposed for the problem of key area delineation.The algorithm is based on the SVR-Kriging interpolation algorithm to complete the central nodes coverage estimation of the enemy battlefield wireless communication network in the presence of coverage blind areas in random nodes deployment.Then,the key area is determined according to the required signal strength of normal communication,which provides an important application background for the further study of the mobile distributed electronic warfare node optimization and the addition of static electronic warfare nodes.Secondly,based on the improved particle swarm optimization algorithm,this dissertation studies the optimal deployment technology of mobile electronic warfare nodes.Based on the characteristics of the focus area and the general area in enemy battlefield wireless communication network,the dissertation uses the particle swarm optimization algorithm with weighted coverage as the objective function to achieve the goal of improving the coverage of the key area without sacrificing the overall area coverage after optimizing the deployment.At the same time,the convergence rate of the algorithm is accelerated by integrating the key area into the velocity and position updating equation of the particle swarm algorithm.The simulation results show that the deployment plan has focused on improving the coverage of key areas after the optimization as well as the proposed algorithm can effectively optimize the initial deployment of electronic warfare nodes.And the algorithm is higher than other algorithms in operating efficiency.Finally,in order to solve the limitation of static electronic warfare nodes,this dissertation proposes an algorithm to add electronic warfare nodes.The algorithm fixes the coverage blind areas in the network by secondary addition.The blind areas are divided into three categories according to the importance of covering the blind spots and size of the areas.They are the blind area which does not need to be repaired,the blind area which only needs an electronic warfare node to be repaired and blind area which needs a number of electronic warfare nodes to be repaired.The minimum coverage circle repair method and the honeycomb growth method are proposed for the two blind areas that need to be repaired.The results show that the proposed algorithm is better than the traditional patch algorithms,with less requires nodes and better practical application.