The Air Combat Modeling And Simulation Of Ucav Based On Differential Game

Unmanned Air Vehicle (UAV) is an important complement to China’s national defense modernization. Under modern high-tech, Unmanned Air Vehicles are used widely in the five-dimension war of land, sea, air, sky, electricity. Air combat is the emphasis and difficulty in the research area of Unmanned Combat Air Vehicle.Differential games is a game which describes its phenomenon or law with differential equation (equations), it is a traditional research ways of air combat. It is the most famous and realistic game model. Therefore, the problem of air combat construction and emulation of UCAV is researched. First, differential games’species and constitution is summarized, the kinds of differential games which are often involved in air combat are illustrated in detail, and the basic resolving processes about differential games is stated; subsequently, the differential games model of pursuit and evasion is built in the horizontal plane. Taking the relative movement of two fighters into account, the pursuit and evasion model is transformed into polar coordinates, both sides’suboptimal feedback guidance control law is obtained by using the technique of forced singular perturbation (FSFT). Aiming at the problem of air combat in three-dimensional space actually, differential games are combined with computer game. Using“changing value”of computer game for reference, the traditional differential games model which using“angle advantage”as cost function is improved. When the fighter is in different air combat situation, the model embodies the real air combat situation that the same angle changing can generate the different income, so the model makes the air combat maneuvering decisions more intelligent and more reasonable.