Research On Architecture And Partial Key Techniques Of Integrated Bridge System

Integrated bridge system (IBS) is the key part of marine automation area, and it is also the front-subject of marine navigation technology. Research on the key technologies of IBS can increase the automation and information level of ship, improve the economy and safety during ship navigation.The continuous development of international IBS technologies has attracted people's attention in domestic marine field, but the study on integrated bridge system is still in initial stage. Based on national science and technology planning project during eleventh Five-Year Plan, a systematic study is made on the key technologies of IBS. The main research work and results of this dissertation can be concluded as follows:1) The system functions, components, information flow, logical structure and technical standard of IBS were discussed in the viewpoint of system design. A three-dimensional architecture was presented, which includes operational architecture, system architecture and technical architecture. Operational architecture prescribes system tasks and information flow; System architecture defines system components and logical structure. Technical architecture specifies the standards and criterions of integrated bridge system. The architecture of IBS is first put forward in this paper, which gives theoretical framework for system design.2) The design technology of electronic chart display and information system (ECDIS) was studied, and the engineering design of International-Orientated ECDIS was completed. The system meets the demands of corresponding standards made by IMO, IHO and IEC, and can simutaneously display electronic charts and electronic maps with S57,VCF,MapInfo and Raster formats. Research on radar image& chart graph overlapping technique in ECDIS was made, object's information from ARPA and radar echo images can be displayed. Research on optimal route design was made, discriminant model for optimal route was designed.3) Network communication technique is a main research area of IBS. A integrated network system with three-layer structure, which includes wireless network, local area network and fieldbus network, was designed; A special intelligent gateway was developed, which has the ability of asynchronous message communication. A special network management module was designed.4) According to the Characteristics that the data of IBS was collected simultaneously by multi-sensor, and processed simultaneously by multi-workstation, a special navigation database system which can be visited platform irrelatively was designed on the basis of distributed database technology. Data can be accessed synchronously among IBS workstations.5) Navigation information fusion technology of IBS was studied for engineering application, the navigation information fusion algorithm based on the no-reset federated filter with output emendation was designed, and simulation was done. Simulation results indicate that the method is effective to improve the precision and reliability of navigation data.