Optimal combination strategy for underwater acoustic countermeasure at close distance

The optimal parameter selection of combination strategy for a submarine to countermeasure acoustic homing torpedo at close distance is studied. The characteristics of underwater acoustics countermeasure at close distance are analyzed. The tactic scenario, the models of torpedo active detection and relative movement between torpedo and target are established. Key factors that can be applied in distinguishing the effectiveness of different strategies are brought forward. The fitness function is determined and genetic algorithm is used to obtain the optimal parameter selection of combination strategy for the submarine under typical cases. Simulation results show the validity of the algorithm.