Design And Implementation Of The Communication Module For The Yangtze Trunk VHF Radio Monitoring System

With the rapid development of our country’s economy, shipping became very busy in the Yangtze river. Ship radio station is the necessary equipment of the ship for safety, but also appeared many problems, such as:illegal use of high-power radio, broadcast reactionary speech, insult invective offensive language or take up safety relief channel for a long time, etc. It is difficult to manage radio stations in the Yangtze river. The Yangtze trunk VHF radio monitoring system is built in order to solve these problems. The problem I am trying to solve is the communication between subsystems.Through the analysis of the radio monitoring system usage scenarios, the subsystems of the radio monitoring system is designed to have one management center,and have the communication module by ad-hoc network. Monitoring stations, display client are managed by a central server; A single mobile stations monitoring equipment and its display client can be seted up the by P2P ad-hoc network. Radio monitoring network transport protocol specification is being used in the communication between stations and display client. The communication module between the monitoring stations and the center server is realized by the WCF framework based on Service Oriented Architecture. The communication module between the display client and the center server is also realized by the WCF framework.The problem of communication between the subsystems of radio monitoring system is solved in this thesis. The results obtained in this research include:all stations are centrally managed; the state s of stations are real-time monitored; display client can get the states of stations which can be monitored through the central server; display client can access communication with the stations; When unable to access the central server, the client and the stations can be combined by self-networking. The impacts of our obtained results are positive, not only to enhance the management of radio monitoring equipment, but also facilitates the use of surveillance equipment..