An identification algorithm for a ship passing through a sea area key node
A key node and identification algorithm technology, applied in the field of ship informatization, can solve the problems of different lengths, difficult to accurately locate the passing position, passing time, irregular time interval sampling of AIS information, etc., so as to make up for the shortage of discrete time sampling. Effect
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[0037]The present invention is further described below in conjunction with the accompanying drawings of the description, as shown in the figure:
[0038] The ship of the present invention passes through the recognition algorithm of sea area key node, comprises the following steps:
[0039] S1. Collect ship track information, and obtain the sequence of ship track points arranged in chronological order in, for time point t k The ship's track point at the time; the ship's track information is collected by the automatic identification system AIS, and the automatic identification system AIS adopts the prior art; the track point is a certain position of the ship on the navigation route;
[0040] S2. Select two adjacent track points in turn in the track point sequence of the ship, and connect the two adjacent track points to form a line segment to obtain a line segment sequence (L 1 , L 2 ,...,L k ,...,L n-1 ), where L k ship track point and A line segment formed by conn...
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