Journal
SENSORS
Volume 14, Issue 9, Pages 17376-17389Publisher
MDPI
DOI: 10.3390/s140917376
Keywords
positioning method; displacement correction; time of arrival; automatic identification system (AIS)
Funding
- Chinese National Science Foundation [61231006]
- National Key Technologies R&D Program of China [2012BAH36B01]
- Fundamental Research Funds for the Central Universities [3132014329]
- Liaoning Provincial Natural Science Foundation [2014025002]
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A new position estimation method by using the signals from two automatic identification system (AIS) stations is proposed in this paper. The time of arrival (TOA) method is enhanced with the displacement correction, so that the vessel's position can be determined even for the situation where it can receive the signals from only two AIS base stations. Its implementation scheme based on the mathematical model is presented. Furthermore, performance analysis is carried out to illustrate the relation between the positioning errors and the displacement vector provided by auxiliary sensors. Finally, the positioning method is verified and its performance is evaluated by simulation. The results show that the positioning accuracy is acceptable.
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