Integrated guidance and control for missiles with strap-down seeker

Due to the fact that the detection information of the strap-down seeker is coupled with missile attitude, the line-of-sight (LOS) decoupling and the field-of-view (FOV) limit for integrated guidance and control (IGC) design has became the core problem for the missile with strap-down seeker. A new IGC method with FOV limit was proposed. First, the state space model with strict feedback type for IGC design considering FOV limit was derived based on the line-of-sight decoupling model and the traditional IGC model; second, the IGC method with part state constraints was proposed based on the Barrier Lyapunov function (BLF) and the dynamic surface control (DSC) method, by which the extended state observer (ESO) was employed to observe the mismatched uncertainties and the bounded stability of the IGC system was proved based on the Babalat's Lemma and the Lyapunov stability theory. The simulation results imply that the proposed IGC method considering FOV limits can not only ensure the LOS angular rate converges to zero but also satisfy the FOV limit conditions.