Impact time and angle constrained integrated guidance and control with application to salvo attack

In this paper, a novel method is proposed to estimate the impact time (time taken to hit the target) for missiles guided by integrated guidance and control (IGC). Firstly, the elevator deflection command is directly designed in the frame of IGC to make the line-of-sight (LOS) angle converge to the desired value in finite time; thereafter, the missiles will fly along the desired LOS until they hit the target. Then a method to estimate the impact time is provided; this can help the user systematically choose the missile parameters in order to achieve a certain impact time, and thus this result can be applied to the case of salvo attack of multiple missiles without online data links. Finally, simulation studies are performed to verify the effectiveness of the proposed scheme.