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Publicações
Silveira, P., Teixeira, A.P. e Guedes Soares, C. (2015), “Assessment of ship collision estimation methods using AIS data”, Maritime Technology and Engineering, Guedes Soares, C. & Santos T.A. (Eds.), Taylor & Francis Group, London, UK, pp. 195-204
The paper reviews different models that have been proposed for estimating ship collision candidates. The method based on the collision diameter proposed by Fujii and Pedersen is first used to assess the number of collision candidates, using AIS data received from ships off the coast of Portugal during one month. A new method is proposed to determine the number of collision candidates based on the available AIS messages. In this method pairs of ships are modelled as rectangles, using length and breadth information available in AIS messages. These rectangles are projected onto a line perpendicular to their relative velocity, (using course, heading and speed information from AIS) and the pair is considered a collision candidate if there is overlapping in the projections. A parametric study is performed to assess the contribution of important parameters of this method on the collision candidates estimates. The objective is to investigate the capability of the method for better predictions of collision candidates based directly on AIS data.
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