Research On Key Technologies Of Situation Assessment For Air Battlefield Environment

In modern warfare,with the rapid development of information technology,there are many new weapons and tools.At the same time,the battlefield environment becomes more and more complex with the addition of electronic countermeasure,and the monitoring and evaluation of battlefield become more and more important.How to objectively and accurately evaluate the intentions and capabilities of targets in complex battlefield systems has become an important research direction.Moreover,the evaluation of target intentions and capabilities can not only make battlefield commanders more clearly understand the battlefield situation,make reasonable decisions and guide the distribution of force,but also effectively defend against the threat posed by our side according to the intention of the target.In this paper,based on the air battlefield,the key technologies of situation assessment are studied,including situation modeling based on feedback structure,threat assessment based on dynamic-static performance and situation reasoning oriented to air battlefield,and the effectiveness of the method is verified by simulation experiments.The major innovative research results obtained are as follows:(1)To solve the problem that hierarchical fusion model can not return threat assessment results to situation reasoning,a feedback situation assessment model is proposed in this paper.Firstly,the three-level functional model of situation assessment and its implementation process are analyzed in detail.Then the blackboard model,matching model and hierarchical fusion model are introduced.Finally,the feedback situation assessment model is proposed based on the advantages and disadvantages of each model and application scenarios,and applied to the situation assessment of air battlefield.(2)Threat assessment of targets is an important basis for tactical decision-making.In this paper,a threat assessment method based on the combination of dynamic and static performance is proposed,and the static threat and dynamic threat are fused by the multiplication relationship for the first time.In this method,various threat elements are analyzed firstly,then the static threat based on capability and the dynamic threat based on situation are estimated respectively,and the fusion results are quantified into threat levels.The simulation results show that the evaluation method is more objective.(3)Aiming at the action of target aircraft in air combat environment,in order to further mine the target intention behind the battlefield data,this paper proposes a closed-loop situation reasoning method based on Bayesian Network combined with feedback situation assessment model.,and the situation reasoning oriented to air battlefield is realized concretely.The simulation results show that the closed-loop situation reasoning process can be more close to the real situation.