Virtual target based optimal guidance law with impact angle and burst height constrains

With the development of missile and warhead, new performance requirements of guidance law such as impact angle and burst height constrains are paid more attention. In this paper, an optimal guidance law with impact angle and burst height constrains is researched based on the virtual target. Firstly, the general kinematic model of pursuit-evasion of the missile and target is established. Secondly, the virtual target scheme including its movement characteristics are proposed. And then, an optimal guidance law is designed to attack the virtual target using the θ-D method solving. Finally, a numerical simulation is conducted and the result shows that the guidance law proposed has a high accuracy and it can satisfy constrains of impact angle and burst height.