A Ship Collision Risk Determination Method Based on Digital Ship Domain Model
A ship field and collision risk technology, which is applied in the field of ship collision risk determination based on the digital ship field model, can solve the problem that there are no mature theories and methods for ship collision dynamic risk assessment, and achieve reduction of ship collision accidents, promotion of cross-integration, The effect of improving accuracy
Active Publication Date: 2022-07-19
WUHAN UNIV OF TECH
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Problems solved by technology
However, the application of the ship field in the ship collision risk assessment is mainly based on the azimuth and distance of other ships entering the ship's field, and the traditional collision risk assessment method has limitations in the application of ship collision risk assessment in busy and restricted waters. There are no mature theories and methods for the dynamic risk assessment of ship collision in restricted waters, and there are few literatures that use overlapping areas of ship fields to evaluate the risk of ship collision
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[0052] The technical solution of the present invention is further described in detail below through the embodiments and in conjunction with the accompanying drawings, a method for determining the risk of ship collision based on a digital ship domain model, comprising the following steps:
[0053] Step 1. Build the outer boundary model of the ship domain: First, according to the ship collision avoidance rules and the ship's gyration performance, take the limit passing between ships as the entry point, and obtain the position point of the other ship when the ship moves at the latest in the avoidance operation. As the azimuth domain scale point of the ship, then, the collision avoidance behavior of the ship in different encounter states is classified and discussed, and the domain scale expression function of any azimuth of the ship is obtained. Finally, based on the quaternary ship domain modeling idea, a ship Domain Outer Boundary Model.
[0054] The specific process is as follo...
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The invention provides a ship collision risk determination method based on a digital ship domain model, which is characterized by comprising the following steps: step 1, constructing an outer boundary model of the ship domain; step 2, constructing a digital ship domain model based on the outer boundary model of the ship domain Step 3: Based on the digital ship domain model, construct a dynamic risk representation model of collision between single ships and multiple ships in the water area. The application of the method of the invention can effectively improve the accuracy of early warning and forecasting of ship collision risks, has great significance for reducing the occurrence of ship collision accidents, and can support optimization of maritime safety supervision and reasonable layout of search and rescue resources.
Description
technical field [0001] The invention belongs to the field of water traffic safety, and in particular relates to a ship collision risk determination method based on a digital ship field model. Background technique [0002] Ship collision risk early warning is an important basis for the intelligent decision-making of ship collision avoidance and the intelligence of maritime safety supervision. The traditional early warning method to determine the risk of ship collision by indicators such as the minimum distance to closest point of approach (DCPA) and the minimum time to encounter (time to closest point of approach, TCPA) can be better applied to open waters. However, the application in busy and restricted waters with frequent changes in ship behavior has great limitations, so that in the traffic management system, there is a high false alarm rate for collision risk warning based on setting DCPA and TCPA thresholds alone, resulting in In actual work, the VTS watchman often tur...
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IPC IPC(8): G06F30/20G06F30/15G06Q10/06G08G3/02G06F17/11G06F17/15
CPCG06F30/20G06F30/15G06Q10/0635G08G3/02G06F17/11G06F17/15
Inventor 徐言民谢金鹏刘钊
Owner WUHAN UNIV OF TECH