Abstract
It is the foundation of intelligent inland waterway management to collect the location information of aids to navigation (AtoN) with high precision. Differential Global Positioning System (DGPS) is an effective approach to improve the accuracy of the Global Positioning System (GPS). This paper provides an accurate positioning method for AtoN through applied the DGPS and ZigBee. In this system, via ZigBee in ZigBee network, AtoN transmits its own GPS data to the GPRS AtoN which has a GPRS module. The GPS reference station receives and decodes the local DGPS data. Then, the GPS data of AtoN and the local DGPS data are broadcasted to the supervision center of AtoN management through GPRS. The accurate position of AtoN is computed in supervision center. This system will improve the positioning accuracy of AtoN in nearby area of reference station. It can be used for alarm of AtoN drift and improve the navigation safety of inland vessels.
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