| 摘要 |
A method for generating charts for assisting ship manoeuvres is provided, wherein a given area is divided up into a lattice network which is identical to a crystal lattice. A pursuer (P) and a fugitive (F) are each placed in a starting position on one node of the network and can move one step at a time by leaping from one node to the next. Manoeuvring possibilities are determined by two sets of manoeuvre vectors, one for the pursuer (V1-V3) and the other for the fugitive. Each node is assigned a number. At the start, when the pursuer is on the central 0 and the fugitive is on one of the other nodes, the pursuit time is determined by the number of the fugitive's starting node. Construction is performed by a simple erosion and dilation of successive areas outwardly from the central 0. The method can be used to prevent ship collisions.
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