Research On Multi-missile Cooperative Guidance And Control Technology

As the improvement of modern missile defense system, it becomes more and more difficult for a single missile to penetrate the defense and attack the target successfully. In recent years, cooperative combat of multiple missiles has attracted more and more attention, which can increase penetration ability, target searching ability, and electronic countermeasure ability of missiles greatly. This article mainly focus on the research of some key issues of guidance and control problem of missiles cooperative engagement. The main research contents are as follows:1. Design of guidance and control law for cooperative attack of multi-missiles based on predictive control theory. Based on Gauss Pseudospectral Method, a three-dimension optimal trajectory is generated, which can make the missile hit the target at designated time and designated impact angle. Under the consideration of extern disturbance and limited missile’s control input, a robust trajectory tracking controller is designed adopting predictive control method. Convex optimization tool CVXGEN is used to get the missile acceleration to make the missile track the expected trajectory generated by Gauss Pseudospectral Method accurately, which can make sure that multiple missiles hit the target at the same designated time.2. Integrated guidance and control law for cooperative attack of multiple missiles based on dynamic surface control. According to the equations reflecting relative movement between missile and target and the dynamic model of missile, at the same time, considering the modeling error of missile and the disturbance acting on missile, the integrated guidance and control model with bounded uncertainties is built. Under the condition that the missile has variable velocity and the target is non-stationary, a cooperative strategy that can control the missile to hit the target at the designated time is designed, and the design method of key parameters of cooperative strategy is discussed. Taking the nonlinear saturation of missile control input into account, a robust controller of integrated guidance and control is designed based on dynamic surface control theory, and its stability is proved rigorously according to Lyapunov stability theory.3. Formation control arithmetic for multiple missiles. A composite formation strategy is designed based on Gauss Pseudospectral Method and Dynamic Surface Control theory, which contains formation forming algorithm and formation holding algorithm. Based on “leader-follower” formation mode, an optimal trajectory that makes multiple missiles form the designated shape within shortest time and with less control energy is designed adopting Gauss Pseudospectral Method, which takes kinds of constraints as terminal position, terminal states of followers and collision avoidance into account. Then a robust controller is designed to track the optimal formation forming trajectory and then hold the designated formation shape adopting dynamic surface control theory. The stability of the robust controller is proved based on Lyapunov stability theory.