Research And Realization Of Embeded Marine AIS Networks Administration

The universal shipbome automatic identification system (AIS) is one kind of the navigation equipments. It uses the TDMA communication skills. Its merit is: the information content is big, timeliness good, the anti jamming ability is strong and the barrier transmission. The main application domain is the ships evades and the ships traffic control system, it takes corresponds the communication technology and the computer technology as the backing, and bring the revolutionary progress for the marine ships surveillance.This paper analyzed and studied in the AIS system software partial - network management system. After the discussing in the AIS essential technology, the article proposed the solution of embedded AIS network management system, and realize it under the Linux platform.The paper first introduced the AIS system composition structure, the network communication system model, as well as important concept. Above this foundation, studies AIS four channel access schemes: ITDMA, SOTDMA, RATDMA, FATDMA; Studies in AIS the essential technology: Time synchronization, Slot reuse. Then, under the Linux platform, based on the SOCKET, realized main function of the network management system stages, time synchronization, and slot reuse algorithm. Finally through establishes the SOTDMA mathematical model, analysis its conflict probability.