Chinese Journal of Ship Research, Volume. 16, Issue 6, 19(2021)

Collision avoidance path planning of tourist ship based on DDPG algorithm

Yi ZHOU... Chuanping YUAN, Haicheng XIE and Jianfeng YANG |Show fewer author(s)
Author Affiliations
  • School of Electronic and Information Engineering, Soochow University, Suzhou 215006, China
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    Objective

    Sailling saftey is the chief matter for ship navigation, supposing that collision avoidance operation is heavily dependent on the captain's performance or judgement, it would pose potential risks to the ship safety. In order to coordinate all ships (tourist ships, cargo ships, etc.) in key waters and predict their routes, it is necessary to establish an anti-collision mechanism.

    Methods

    Using the deep deterministic policy gradient (DDPG) algorithm and the Fujii's ship domain model, an electronic chart is used to simulate the ship's navigation route, and an improved strategy for the DDPG algorithm based on the key learning of failure regions and the improved parameters of the ship domain model according to the characteristics of tourist ships are proposed, so as to enhance the accuracy of route prediction and anti-collision.

    Results

    Using the improved DDPG algorithm and ship domain model, compared with the previous algorithm, the accuracy of ship collision avoidance is raised from 84.9% to 89.7%, and the average error between the simulated and real route is reduced from 25.2 m to 21.4 m.

    Conclusion

    Through the proposed ship collision avoidance path planning based on the improved DDPG algorithm and ship domain model, the supervision function of ship routes in water areas can be realized; when the predicted route intersects with other ships, the dispatcher will be alerted, realizing an effective anti-collision early warning mechanism.

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    Yi ZHOU, Chuanping YUAN, Haicheng XIE, Jianfeng YANG. Collision avoidance path planning of tourist ship based on DDPG algorithm[J]. Chinese Journal of Ship Research, 2021, 16(6): 19

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    Paper Information

    Category: Ship Design and Performance

    Received: Aug. 3, 2020

    Accepted: --

    Published Online: Mar. 28, 2025

    The Author Email:

    DOI:10.19693/j.issn.1673-3185.02057

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