Research On The Configuration And Selection Technology Of Reconnaissance Node In Reconnaissance And Positioning System Of Communication Network

With the increasing number of reconnaissance nodes in the reconnaissance and positioning system of communication network,the information of the nodes received by the positioning system becomes more and more large.This leads to the need to process a large number of node data to obtain the estimated coordinates of the source,so it is necessary to configure and screen the number of reconnaissance nodes used in the positioning system.In the research of reconnaissance node configuration and screening technology,the node screening criteria are first determined under the source location model,then the node screening algorithm is used under the node screening criteria,and then the node screening process is realized.Therefore,it is of great significance to study source location model,node screening criteria and node screening algorithm in node configuration and screening technology.In this paper,the selection and configuration technology of reconnaissance nodes in the communication network reconnaissance and positioning system is taken as the research topic,and the source location model,node selection criteria,node selection algorithm and other issues are mainly studied.The research content is mainly divided into three parts.1.Using the weighted error matrix,two node screening algorithms based on convex optimization and minimum non-zero eigenvalue maximization are improved to achieve the purpose of node screening.In the basic mathematical model,these two algorithms are used to filter the nodes.Simulation results show that the proposed algorithm can effectively filter nodes,and the parameter estimation effect is better than the traditional algorithm.2.TOA location model and TDOA location model were studied,and node screening criteria based on the weighted error matrix as the product of noise variance and distance were proposed.Under this node screening criterion,the node screening algorithm is used for simulation.Experimental results show that the proposed algorithm can perform node screening better and locate the source better than the traditional filtering algorithm.3.Aiming at the use of prior information,the distance equation in the TOA positioning model,the distance difference equation in the TDOA positioning model,and the azimuth equation in the AOA positioning model are studied,and the source positioning model based on Taylor expansion is proposed.In the source location model,node screening algorithm is used to filter nodes,and the simulation results are verified the proposed node screening algorithm can improve the efficiency of node configuration and screening,and can improve the positioning accuracy more than the traditional filtering algorithm.Through the research on the source location model,node screening criteria and node screening algorithm,it can realize the rapid screening and configuration of the reconnaissance nodes in the reconnaissance and location system of the communication network,and then realize the accurate location of the information source.