Research On Electromagnetic Situation Analysis Method Of Air And Missile Defense System

Air and missile defense is an extremely important military task which is directly related to national security.With the development of information warfare,The requirement of electromagnetic situation analysis ability of air and missile defense system is also increasing with each passing day.However,the electromagnetic environment on the air and missile defense battlefield is not only greatly complex and rapid changing,but also highly offensive and defensive,which greatly increases the difficulty of comprehensive analysis of electromagnetic situation.Therefore,it is of great significance to do research on the analysis method of the electromagnetic situation on the air and missile defense battlefield.In this thesis,with Networked Air & Missile Defense(NAMD)systems selected as an example,the process of battlefield electromagnetic situation analysis method is discussed in detail,and the methods of electromagnetic situation description and evaluation of this process are studied pertinently.The main contents include:(1)Some related theories of NAMD systems are introduced in the thesis.Under the set air and missile defense scenario,the structure model and combat characteristics of NAMD systems are discussed in this thesis by some concise schematic diagrams.After that,the combat mode of NAMD systems is described with the connection of its combat theories,and the modeling process of electromagnetic situation analysis based on NAMD systems is discussed in detail.(2)A visual description method of electromagnetic situation on the air and missile defense battlefield is discussed.This method is conducted with the center of signal processing,the purpose of serving the commander,the principle of conforming to the air and missile defense battlefield situation and the target of expressing the electromagnetic situation on the battlefield.In more detail,the description method of electromagnetic situation is analyzed from time,frequency,space,energy and other different dimensions.The practicability and superiority of this method is further displayed by simulation of a scenario of a typical war case.(3)An electromagnetic situation evaluation method is also discussed in this thesis.First,according to the characteristic of the electromagnetic environment,an index model for electromagnetic situation evaluation including general situation indices,relative situation indices,and counter situation indices is discussed.As a common mathematical model,Bayesian network has been applied in situation evaluation.Some theories about Bayesian network are introduced to the electromagnetic situation evaluation model in this thesis.The construction and optimization process of Bayesian network model for electromagnetic situation evaluation are analyzed in detail.The calculation method and process of enemy electromagnetic activity reasoning and electromagnetic situation evaluation using Fuzzy Dynamic Bayesian network(FDBN)is summarized,with its aim to realize the inference of enemy electromagnetic activity based on battlefield information,and provide theoretical basis for the decision-making and deployment of command and control system.The effectiveness of the method researched in this thesis has been fully supported by a comprehensive simulation of a war case at last.