Multi-target Attack Decision-making Technology In Multi-fighters Cooperative Combat Based On Petri Nets

Since the new generation fighters and missiles appear, the multi-aircraft cooperation and multi-target attack system will be developed as the chiefly fighting means. Thus, it is very significative to study on the related technology about multi-aircraft cooperation and multi-target attack system for obtaining the victory of air combat in future. The multi-target attack decision-making technology in multi-fighters cooperative combat is investigated based on Petri nets, and not only establishes the Petri net model of the multi-aircraft cooperation and multi-target attack system, but also studies the multi-target attack decision-making technology in multi-fighters cooperative combat and maneuvering decision combine with Petri net.First of all, the characteristics of the multi-aircraft cooperation and multi-target attack system are analyzed. At the same time, the system's working principle, composing and structure, and the main functions are studied.Second, the upper layer command and control system is analyed for muti-fighters cooperative air combat system from the strategic layer. Joint air combat system mainly composed of muti-fighters cooperative air combat system is studied for campaign layer. And in tactical layer, the information flow of muti-fighters cooperative within formation air combat system is given. On basis of these analysises, the models of joint air combat system and the muti-fighters cooperative within formation air combat system are established based on object-oriented Petri net and simulated by CPN Tools.Following, the multi-target attack decision-making in multi-fighters cooperative combat is investigated, including the air fleet grouping, the assessment of the air situation, the target distribution, the fire distribution. A situation assessment algorithm considering the different coefficient factors at the different air combat situations is proposed and its efficiency is illustrated. A simple and effective target assignment algorithm is devoloped based on the principle of the excellent one attacking the inferior one. The restriction problem of goal function for the air fleet grouping and the fire distribution are studied based on the fuzzy Petri net to obtain the best reasoning results.And then, the maneuvering decision of beyond visual range multi-fighters cooperative combat system is also studied. After the tactic decisions-making for maneuvering and deciding the type of situation, the air combat maneuvers are given on basis of the foregoing tactics and the situation types. Thereinto, the expert knowledge-based approach is adopted for tactics maneuver decision-making and situation type deciding. And the most important one, the tactic decisions-making for maneuvering is studied based on adaptive fuzzy reasoning Petri net, and the input arc weight values of the net's transitions are trained using the improved learning algorithm. Hence, the convergence of value is better than the original algorithm.Finally,the software is developed for multi-target attack decision-making technology in multi-fighters cooperative combat based on database with VC++. In ditails, the aircraft information management system, the missile information management system and the current and useable fighter information management system is realized. At the same time, the decision-making is given for multi-fighters cooperative combat in VC++ environment based on these databases. Thus, the effiency of these algorithms in this dissertation is illustrated by using the software simulation.