Automatic ship reporting systems (AIS ââ?¬â?? Automatic identification System, LRIT ââ?¬â?? Long\nRange Identification and Tracking, VMS ââ?¬â?? Vessel Monitoring System) today allow global\ntracking of ships. One way to display the results is in a map of current ship positions over\nan area of interest, the Maritime Situational Picture (MSP). The MSP is dynamic and must\nbe created by fusing the reporting systemsââ?¬â?¢ messages, constructing ship tracks and predicting\nship positions to correct for latency especially in the case of AIS received by satellite which\nforms the bulk of the data. This paper discusses the completeness of the resulting MSP and\nthe accuracy of its positions, quantifying the additional value of the individual data sources.
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