Research On Optimazation Scheme For Target And Missile Selection In Air Combat

In this thesis, the strategies for threat sequencing, target selecting, and air-to-air missile selecting in multi-aircraft cooperation air combat are studied. A target and missile selection decision making system in air combat is designed, the corresponding algorithms are developed, and several simulations are performed to evaluate the system.Multi-aircraft cooperation in air combat is the trend for future air combat. The threat sequencing is an important part for air combat. The threat from enemy aircraft to our aircraft is valuated and sequenced using the proposed sequencing system based on the linear weighting method. Firstly, the factors which have great influence on air combat are chosen as the threat evaluation factors and the threat index is decided. Then the weight of every threat index is obtained using hierarchical analysis method and the total threat index from each aircraft is determined. At last, the total threat index of each enemy aircraft is calculated based on linear weighting method. The aircraft which is most threatened by enemy or not suitable for attacking should evade and try to occupy a good position. The simulation results show that the developed threat sequencing method is reasonable.In the second part, a superior index based target selecting method using genetic algorithm is proposed. Each target is assigned to an aircraft to ensure the efficiency of attacking. Firstly, the multi-aircraft air combat model is built. Then the genetic algorithms are developed using two different chromosome coding methods, and the constraint rules are proposed to avoid redundant assignment of the target. After which the results of the different coding methods are compared. At last, the proposed algorithm is simulated in MATLAB environment. The experimental results show that the target assignment scheme is reasonable and useful.In the third part, a missile selection strategy is built using Analytic Hierarchy Process (AHP). The advantages and disadvantages of every model are analyzed. The missile selection models and strategies are tested in air combat cases.Finally, a simulation system is developed to evaluate all the algorithms proposed in the thesis.The research results of this thesis will provide useful suggestions and reference for the study of multi-aircraft cooperation air combat.