Automatic collision avoidance system (ACAS)

The collision of ship is one of serious maritime affairs. It is necessary direction to reduce the collision accident of ship that equipping ACAS on ship. A kind of ACAS with the character of estimating the manipulative K T index of coming ship is brought forward in this thesis. In it, the system composing and collision avoidance decision software frame are given. It also depicts 4 basic mathematical models of the subsystemof collision avoidance decision, that is collision criticality, geometry collision avoidance, matrix countermeasure and differential coefficient countermeasure mathematicalmodels based on the example of two ship meeting in wide\|deep water area. Finally the instanceof this emluatoris given.