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Aiming at the low fidelity of virtual underwater acoustic target for submarine real equipment training, the underwater acoustic feature simulation information of target is provided to submarine sonar system by embedded training system. The acoustic characteristics calculation models of virtual underwater acoustic target are built. The calculation method of underwater acoustic transmission loss is researched. The calculation models of ocean background noise and submarine self-noise are built. The calculation models of virtual underwater acoustic target motion are built. The intelligent maneuver decision module of virtual underwater acoustic target is established in embedded training system. The verification of simulation experiment shows that the comprehensive application of above methods can efficiently improve the fidelity of virtual underwater acoustic target. The submarine real equipment training requirements are satisfied.