Research On Threat Assessment Technology In Air Ground Battlefield Environment

In modern air to ground operations,multi-level and multi style saturation attacks combined with high,medium and low altitude are mostly used.Ground air defense operations will face a severe test.For the ground command and decision-making system,on the one hand,it should deal with complex and diverse enemy information,on the other hand,it should make corresponding countermeasures in time and accurately to defend the enemy’s attack.In order to obtain the initiative of air defense operations,battlefield information fusion is particularly important.As a key link of information fusion,threat assessment can assist the ground commander to make reasonable decisions and build effective defense in advance.Based on the background of air defense operation,this paper carries out threat assessment for air to ground combat targets,comprehensively considers combat intention,combat capability and combat opportunities,and establishes a set of comprehensive threat assessment index system for air to ground battlefield;Then,a threat assessment method of air ground Battlefield Based on Grey network analysis(g-anp)is proposed,according to which the attack intention of the target is judged and the situation assessment results are modified,so as to obtain a more objective understanding of the battlefield;Finally,a visual air ground threat assessment simulation system is established,and the effectiveness of the method is verified by simulation experiments.The main work of this paper includes:Firstly,the paper analyzes the current situation of threat assessment of air to ground battlefield at home and abroad,compares several common threat assessment methods,puts forward the threat assessment method of air to ground Battlefield Based on Grey network analysis(g-anp),and expounds the relevant mathematical theoretical basis of information fusion technology,threat assessment theory and grey network analysis method,It provides theoretical support for the establishment of threat assessment system and threat assessment model in complex air to ground battlefield environment.Secondly,the traditional thought holds that situation is a qualitative analysis and threat is a quantitative calculation,which will be considered separately in practical processing.In this paper,the situation and threat are closely combined,the comprehensive threat calculation framework of combat intention,combat capability and combat opportunity is established,the threat assessment factors are classified,and the quantitative process of each index is given in detail;The air ground battlefield threat assessment model based on g-anp method is adopted,and the solution process of the model is described in detail;At the same time,an attack target reasoning algorithm based on threat assessment is proposed,and the results are fed back to situation reasoning to form a feedback closed loop.Through the above processing,the problems of various and unclear classification of air to ground battlefield threat assessment factors,large correlation of threat assessment factors,insufficient quantification of threat analysis and lack of basic data can be solved to some extent.Finally,in order to visually simulate and analyze the above algorithm models,a set of air ground threat assessment simulation system(atass)based on QT is developed.The system is designed hierarchically according to system tasks,and is divided into user interface layer,model layer,data layer,platform layer and hardware layer from top to bottom.Based on the simulation system,the feasibility and effectiveness of the threat evaluation method of air ground Battlefield Based on Grey network analysis(g-anp)and the attack target inference algorithm based on threat value are preliminarily verified.At the same time,the feasibility of the integrated display of situation inference,threat assessment and attack target inference is verified.