Criterion and Strategy of Torpedo Trajectory for Protecting Underwater Launch Platform

The increase of torpedo range and the significant enlargement of torpedo detection zone resulted from complex countermeasure promote the probability of a torpedo to search and track the launch platform. This paper studies the design scheme of torpedo trajectory to protect underwater launch platform, and proposes a judgment algorithm for determining whether a torpedo can discover the platform and a maneuver strategy for the platform as it is about to be found by a torpedo. How a torpedo acquires location information of the launch platform is analyzed, subsequently a judge model and an elusion model are established, and corresponding engineering realization method is offered. This scheme is simple and accurate, and no emergent braking is needed for elusion in any case. Hence this scheme can avoid the waste of torpedo sinking, and can attack target by utilizing follow-up information.