Effects of Evidences on Type Identification of Sub-launched Torpedo

Guidance type identification of an incoming torpedo is a premise of defending surface ship against torpedo exactly. Extracting and analyzing evidences are essential for establishing the identification system of torpedo types. In this study, four evidences are extracted from incoming torpedo information on the basis of tactical and technological characteristic information; three evidences are extracted from battlefield surrounding, and six evidences are extracted from naval battle state. The affecting mechanism of these evidences on type identification of torpedo guidance is ana-lyzed in detail, and a method of evidences fusion is discussed. This study may provide a theoretical support for objec-tively describing the basic probability assignment of evidences, and facilitate practical application of the type identifica-tion system of sub-launched torpedo.