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Ship conflict early warning method

A technology for ships and ship trajectories, which is applied in special data processing applications, instruments, electrical digital data processing, etc., and can solve the problem that there is no more accurate plan for early warning of ship trajectories and ship conflicts.

Active Publication Date: 2015-03-25
JIANGSU UNIV OF TECH
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Problems solved by technology

The ship conflict warning is based on the prediction of the ship's trajectory. In the actual navigation of the ship, affected by various factors such as meteorological conditions, navigation equipment and driver's operation, its operating state often does not completely belong to a specific Therefore, there is currently no more accurate solution for the prediction of ship trajectory and early warning of ship conflict

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Embodiment 1

[0052] See figure 1 , the ship conflict early warning method of the present embodiment includes the following steps:

[0053] ① The real-time and historical position information of the ship is obtained through the sea surface radar, and the position information of each ship is a discrete two-dimensional position sequence x′=[x 1 ', x 2 ',...,x n '] and y' = [y 1 ',y 2 ',...,y n ′], by applying wavelet transform theory to the original discrete two-dimensional position sequence x′=[x 1 ', x 2 ',...,x n '] and y' = [y 1 ',y 2 ',...,y n ′] for preliminary processing, so as to obtain the denoising discrete two-dimensional position sequence x=[x 1 , x 2 ,...,x n ] and y = [y 1 ,y 2 ,...,y n ], for the given original two-dimensional sequence data x′=[x 1 ', x 2 ',...,x n ′], which are approximated by linear expressions of the following form: f ~ ( x ′ ) ...

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Abstract

The invention relates to a ship conflict early warning method. The ship conflict early warning method comprises the following steps that the real-time position information and the historical position information of a ship are obtained through maritime radar and are processed primarily; ship trajectory data are preprocessed at each sampling moment, clustering is conducted on the ship trajectory data at each sampling moment, parameter training is conducted on the ship trajectory data at each sampling moment by means of a hidden Markov model, the hidden state q corresponding to an observation value at the current moment is obtained at each sampling moment according to parameters of the hidden Markov model by means of the Viterbi algorithm, a predicted value of the position of the ship in the future time period is obtained at each sampling moment through a set prediction time domain W based on the hidden state q at the current moment, the dynamic behaviors of the ship are monitored in real time by establishing a safety rule set, and a warning message is sent out in time. According to the ship conflict early warning method, the trajectory of the ship is predicted in real time in a rolling mode, effective early warning of maritime conflicts is achieved, and the safety of marine traffic is improved.

Description

technical field [0001] The invention relates to a sea area traffic control method, in particular to a ship conflict early warning method based on a rolling planning strategy. Background technique [0002] With the rapid development of the global shipping industry, the traffic in some busy sea areas is becoming more and more congested. In sea areas with dense and complex ship traffic flow, the control method of sailing plan combined with manual interval allocation for the conflict between ships can no longer adapt to the rapid development of the shipping industry. In order to ensure the safe separation between ships, the implementation of effective conflict early warning has become the focus of sea area traffic control. Early warning of ship conflict is a key technology in the field of navigation. A safe and efficient early warning scheme is of great significance for increasing the flow of ships in sea areas and ensuring the safety of shipping. [0003] In order to improve ...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 韩云祥赵景波李广军
Owner JIANGSU UNIV OF TECH
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