Intelligent Navigation Mark System And Research Of GPS Position Algorithm

With the national economy and modern science in a booming developmentand market, the domestic and foreign shipping transportation and tradebecome increasingly prosperous, therefore higher demands are put forward tosecurity and stability of shipping transportation. As the basic facilities of thewaterway--navigation mark, have indicate heading，accurate positioning，giving an alarm and other important functions, and its management modeimpact on the quality of waterway transport directly. The traditionalmanagement mode of navigation mark mainly relies on patrol boats regularlypatrol. However, this way brings out high costs of maintenance, poorreal-time，low efficiency of management，lacking of clear maintenance andbrings safe hidden trouble to ships around.In order to adapt to the increasingly busy water transportationrequirements， waterway administration department needs a performanceefficient and safe waterway management system, in order to realize navigationmark maintenance and management modernization,intellectualization andautomation. Along with the fast development of computer, communication andGPS technology, the digital navigation mark which take modern managementmethod is appear. Improving the positioning precision is the key factor whichrestricts the digital navigation mark widely using on inland waterway. Thethesis firstly introduced the digital navigation mark status, analyzed functionalrequirements, positioning mode and communication of navigation marktelemeter system, then proposed a solution to high precision navigation marktelemeter system, constructed the system structure and discussed the selectionof key element. Secondly, the paper started the system design. This systemused ARM embedded hardware platform, GPS positioning module and GSMwireless communication module to achieve navigation mark digitalmanagement.Aiming at the requirement of high precision positioning of digitalnavigation mark, the paper analyzed the sources and characteristics of the GPSpositioning error, researched on the method of improving positioningprecision and the identification plan of shift location, and then tested the shiftlocation of navigation mark by this method. From the above analysis, thepaper decides utilize Kalman filter research the accurate positioning ofnavigation mark. According to the research object about the buoy andmigration status, can get migration distance arithmetic calculation formula,accordingly knows a basic simulation model, also get the state model and measurement model, and then MATLAB simulation,it can smooth error,finally get the reliable telemetry terminal system.