ABSTRACT
Underwater target recognition is one of the key technologies of the underwater target detection, but one of the difficulties has been the study of underwater acoustic signals and key issues. Distributed detection target recognition system, make the system structure is more reasonable and has a complementary or redundancy while improving the reliability and certainty of information processing, improved target detection, and recognition capabilities. In a distributed detection system, D-S evidence theory is a common target recognition fusion algorithm. D-S evidence theory was put forward in 1976 by A.P. Dempster, which was improved upon by G. Shafer. The theory is an important method of decision analysis, engineering data integration, and logical reasoning and other areas. When there is high conflict evidence synthesis using traditional Dempster-Shafer (D-S) combination rule, it is possible to draw conclusions contrary to common sense. Amendments to the current D-S evidence theory are mainly divided into two categories: one is amendments to the combination rule [1-3], and another is those who believe that a combination of the rules is no problem, but given the evidence you need to modify the source [4-6].
