Integrated missile guidance and control using adaptive sliding mode approach

A novel method for the integrated guidance and control of a missile in the three-dimensional space is given. In this formulation, a projection decomposition in 3-space, which transforms a three-dimensional intercept into two planar ones is proposed. Firstly, the design in the horizontal plane with regard to the yaw channel of the missile is to keep the missile and target moving in the same longitudinal plane. Whereafter, a planar intercept forms in this longitudinal plane, which is only related to the pitch channel of the missile. Therefore, the intractable 3-space design process can be significantly reduced. To use as little information as possible about target, an adaptive sliding mode integrated guidance and control (ASMIGC) approach is introduced in both planes. An interesting and desirable aspect of the controller is that it does not require the boundary values about the target acceleration, what is more, the robustness to uncertainties is implemented. The effectiveness of the approach is demonstrated through a series of simulations with a 6-DOF missile model. Representative numerical results show that against agile targets, the given approach obtains a high Hit-to-Kill accuracy with reasonable fin deflections.