A Cooperative Guidance Law With Constraints of Impact Time and Impact Angle

To realize the saturation attack to the target from different directions for multiple missiles, the nonlinear motion-models of missile and target were built and normalized. To satisfy the designated impact time and impact angle, the impact-time-control guidance law was used to produce the initial guess-control-variables, and the model predictive static programming(MPSP)technology was adopted to calculate the control variables iteratively based on the initial guess control variables until the miss distance and angle constraints were satisfied, which formed the suboptimal cooperative guidance law with the constraints of impact time and impact angle. Simulation results show that, given reasonable designated impact time and impact angle, the cooperative guidance law is of good precision and robustness, and the law is applicable to on-line optimization due to its efficiency.