Aiming at the configuration problem of amphibious assault ship formation in submarine defense, a circle model of submarine torpedo limit range is established from the analysis of submarine threat to formation. Through model analysis and simulation calculation, it is concluded that amphibious assault ships should be positioned in the later position of threat circle center, and the optimal position calculation model is given. Based on the model of submarine threat range and threat range and the model of submarine defense range of warning ships, the optimal allocation method of escort forces is given, which provides a reference for the submarine defense of amphibious assault ship formation at sea.
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