Simulation of Anti-Torpedo-Torpedo Intercepting Trajectory and Analysis of Hit Probability under Sliding Mode Guidance

The space motion equation of Anti-torpedo-torpedo(ATT) intercepted incoming torpedo was established. The space motion equations for ATT intercepting the incoming torpedo are set up, the spatial motion of ATT and the torpedo is decomposed to the longitudinal and side planes and the guidance rate is designed respectively. Discontinuous smooth function is used to smooth the jitter of the end interceptor of Hit probability and miss distance of ATT under different interception conditions is simulated. The simulation results show that SMG can effectively overcome the target maneuver, ATT self detection error and the coupling between the longitudinal plane and the side plane, it has a high hit probability. The hit probability is also related to the initial position of ATT and the incoming torpedo, the initial ballistic angle and the ballistic angle.