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Multi-stage multi-topology ship traffic complexity measurement method and system

A measurement method and complexity technology, applied in special data processing applications, geometric CAD, design optimization/simulation, etc., can solve the problems of lack of practicability and configurability of the complexity evaluation framework, dependence on evaluation standards, etc., to achieve practical Effects of Configurability and Configurability

Pending Publication Date: 2021-11-09
WUHAN UNIV OF TECH
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Problems solved by technology

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a multi-stage multi-topology ship traffic complexity measurement method and system, which solves the lack of practicability and configurability of the existing ship traffic network complexity evaluation framework and relies on evaluation standard question

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  • Multi-stage multi-topology ship traffic complexity measurement method and system
  • Multi-stage multi-topology ship traffic complexity measurement method and system
  • Multi-stage multi-topology ship traffic complexity measurement method and system

Examples

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Embodiment

[0180] (1) Research waters

[0181] In this embodiment, Ningbo Zhoushan Port is used as an experimental research water area to verify the proposed method of vessel traffic complexity. Ningbo-Zhoushan Port is the largest port in the world based on cargo throughput, exhibiting high traffic density, restricted navigable waters, and complex time-varying ship motion uncertainties. This example collects AIS data from November 1, 2018 to November 30, 2018, and conducts situational awareness and experimental analysis of traffic within the range of longitude 122°06E-122°16E and latitude 29°49N-29°57N .

[0182] (2) Analysis of traffic complexity model results

[0183] (2.1) Number of complexity modes

[0184] Figure 6 Statistical boxplots of the CH indicator are shown for the number of modes of different complexity. According to the evaluation standard of CH index, c=2 corresponds to the best classification effect. The problem is that when c is too small, it may not take advanta...

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Abstract

The invention discloses a multi-stage multi-topology ship traffic complexity measurement method, which comprises the following steps: performing ship motion prediction based on uncertainty characteristics and dynamic characteristics of ship motion, and performing conflict probability calculation by combining a conflict definition on the basis of the ship motion prediction; constructing a ship traffic network based on the two-ship conflict probability, and carrying out traffic complexity modeling according to topological characteristics and evolution characteristics of the ship traffic network; and evaluating the traffic complexity based on an improved FCI algorithm. The invention further provides a system. The topology and evolution characteristics of a ship traffic network and the uncertainty of ship movement are considered at the same time, the traffic condition in a complex water area is perceived by providing a systematic ship traffic complexity measurement method, ship movement prediction, probability conflict calculation and traffic complexity modeling and evaluation are effectively combined, and fine-grained and hierarchical evaluation of the traffic complexity is realized.

Description

technical field [0001] The invention belongs to the technical field of transportation safety, and in particular relates to a multi-stage multi-topology ship traffic complexity measurement method and system. Background technique [0002] Maritime traffic safety has always been one of the most important research areas, because the occurrence of marine accidents will lead to intolerable consequences, including loss of life, property loss and environmental pollution. Economic globalization over the past few decades has led to a rapid increase in shipping volumes, making maritime traffic busier, riskier and more complex, especially in hotspots such as restricted waters. This has brought huge supervision and management pressure to maritime supervisors, especially those who conduct vessel traffic supervision in channel and port areas with large traffic volume and complex and changeable ship movement behavior. In reality, the main tasks of maritime supervisors are to ensure the saf...

Claims

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Application Information

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IPC IPC(8): G06F30/15G06F30/20
CPCG06F30/15G06F30/20
Inventor 刘克中辛旭日吴晓烈余庆刘炯炯王伟强袁志涛
Owner WUHAN UNIV OF TECH
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