Research And Design Of Multi-Node Submarine Information Network

With the development of science and technology,all kinds of submarine transmission network are developing towards large-capacity,long-distance and high-compatibility,and the establishment of a unified submarine information network transmission platform is a mainstream trend.Submarine information network to include the existing submarine cable system,the submarine observation network system and the submarine warning network system of all functions,is an important way to achieve the integration of submarine communication management.Submarine information network is an implementation of submarine multi-node system,which includes three aspects: the structure design of submarine information network,the design of submarine node and the design of functional subsystem.This thesis has studied from three aspects.Firstly,the development of the existing submarine network is introduced,including the key technologies and application scenarios of the specific system,the necessity of the construction of submarine information network,and the research and design of submarine information network architecture.From the overall network topology,the advantages and disadvantages of various topologies are discussed,and the ne twork structure and realization mode of submarine optical cable system and submarine observation network system are analyzed concretely,which can be used for reference in the follow-up design.Then,according to the technical realization of all aspects of submarine information network,the corresponding feasible scheme is given.Finally,according to the characteristics of three different business networks,the operation process of submarine information network is described.Secondly,the thesis introduces the information system frame of the key subunit nodes in submarine information network.Based on the principle of modular design,the modularized design scheme of the connection box is given,and the detailed description of each functional module is given.Finally,from the point of view of sub-system of submarine information network,the implementation of line detection system based on OTDR technology is studied in detail.Combined with COTDR fiber distributed sensing principle,the system architecture and feasible implementation scheme of line monitoring system are given.