MULTI-LEVEL MODEL FOR SHIPS COLLISION RISK ASSESSMENT IN RESTRICTED WATERS
Maritime safety represents a major scientific and technical and engineering problems. Development of technologies, models and algorithms to ensure vessel traffic safety was allocated in a separate branch of the science of management. The problem of marine vessel traffic control in restricted waters is discussed in this paper. Information system model for marine safety estimation (ship collision avoidance) is watched. Three models of ships domain with different geometric forms are discussed. Static obstacles (coast etc.) modelled by geometric zones. System defines some alarm levels: “green”, “yellow” and “red”. An alarm criterion is based on maneuver detector. Maneuver detector is based on maneuver probability estimation by least squares method. If the ship is maneuvering its alarm level decreases (“yellow”). Mathematical model of position and velocity estimation for alarm generating are offered. Some results of experiments are shown, such as numerical experiments for typical ships traces.