Research On Key Technologies Of Air Combat Threat Assessment

With the development of modern technology,air combat is facing increasingly severe and complex situations.Due to the complexity of combat methods,advanced weapons,and diversification of tactics in the era of information warfare,more and more information is captured from the battlefield due to target allocation and tactical decision-making.It is necessary to conduct a more accurate threat assessment based on complex battlefield information.Starting from this purpose,this article improves on the traditional threat assessment algorithm to improve the accuracy and rationality of threat assessment.Through the analysis of the current research status of threat assessment in public literature at home and abroad,it is found that the current commonly used methods have insufficient consideration of threat elements,single integration strategy of threat elements,and inconsistent understanding of group threat measurement.Therefore,this article first conducts detailed modeling and analysis of weapon threat indicators,an important element in air combat threat assessment,to make the elements of threat assessment more comprehensive and reliable.Then design the threat element integration method,optimize the threat weight calculation method,and improve the threat ranking algorithm.Then this article has conducted a preliminary exploration on the group threat assessment,hoping to provide a feasible solution for the group threat assessment.Finally,based on the algorithm research results,this thesis develops a threat assessment software system based on a client/server architecture,encapsulates the algorithm,designs a graphical user interface,and simplifies the threat assessment operation.The main work and innovations of this thesis are as follows:(1)Calculation of weapon threat assessment indicators.Taking the missile as an example,the weapon threat index is modeled and analyzed.Based on the calculation of missile trajectory and attack area,it is proposed to use the combination of hit probability and damage degree as the weapon threat evaluation index value.Through modeling and simulation analysis of three types missiles,a data foundation is laid for single-target threat assessment.(2)Single target threat calculation and ranking based on comprehensive weights.First,improve the existing problems of the threat weight algorithm: improve the subjectivity problem of the analytic hierarchy process through multi-expert hierarchical decision-making;improve the calculation error of the index conflict caused by the unequal index mean value of the CRITIC method;and integrate the subjective and objective weights based on the game theory.Then it sorts based on the threat weight result,and uses the gray correlation method improved by combination weight,approximate ideal solution sorting,weighted order method,and linear weighted sum method for independent calculation.Then the Spearman coefficient between the results of each method is calculated,and after the unreasonable value is eliminated through comparative analysis,the equal weight priority method is used to synthesize the remaining results to obtain the threat ranking sequence.(3)Research on target grouping and group threat assessment technology.The basis of group threat assessment is target grouping.This article proposes the use of hierarchical target grouping.First,the target grouping based on the spatial relationship is carried out,and then the situational reasoning based on template matching is used to modify the grouping result.On the basis of grouping,a group threat assessment combining qualitative analysis and quantitative calculation is proposed.For qualitative analysis,intuitively understand the gain effect of each target in the group through the schematic diagram of its detection range or sphere of influence;for quantitative calculation,a group threat assessment algorithm based on gain matrix is proposed to initially solve the problem of difficult to measure the influence of each target in the air group,And designed for typical combat formations.Finally,based on the client/server architecture,the air combat threat assessment software system is developed.Through software packaging of the algorithm,the QT-based graphical user interface is designed to simplify the threat assessment process and improve the efficiency of simulation.