Skip to content
Extra Form
Abstract Developing a high-level autonomous collision avoidance system for ships that can operate in an unstructured and unpredictable environment is challenging. Particularly in congested sea areas, each ship should make decisions continuously to avoid collisions with other ships in a busy and complex waterway. Furthermore, recent reports indicate that a large number of marine collision accidents are caused by or are related to human decision failures concerning a lack of situational awareness and failure to comply with the Convention on the International Regulations for Preventing Collisions at Sea (COLREGs). In this study, we propose an efficient method to overcome multiship collision avoidance problems based on the Deep Reinforcement Learning (DRL) algorithm by expanding our previous study (Zhao et al., 2019). The proposed method directly maps the states of encountered ships to an ownship's steering commands in terms of rudder angle using the Deep Neural Network (DNN). This DNN is trained over multiple ships in rich encountering situations using the policy-gradient based DRL algorithm. To address multiple encountered ships, we classify them into four regions based on COLREGs, and consider only the nearest ship in each region. We validate the proposed collision avoidance method in a variety of simulated scenarios with thorough performance evaluations, and demonstrate that the final DRL controller can obtain time efficient and collision-free paths for multiple ships. Simulation results indicate that multiple ships can avoid collisions with each other while following their own predefined paths simultaneously. In addition, the proposed approach demonstrates its excellent adaptability to unknown complex environments with various encountered ships.
Publication Date 2019-11-01
Role Corresponding Author
Category SCI
Impact Factor 1.894

  1. 오민재, 노명일, 김범수, 김용환, “선박 내항성능 해석을 위한 선형 곡면으로부터의 오프셋 생성 프로그램 개발”, 한국CDE학회 논문집, Vol. 24, No. 2, pp. 1-10, 2019.06.01

    CategoryDomestic Journal
    Read More
  2. Luman Zhao, Myung-Il Roh, "COLREGs-Compliant Multiship Collision Avoidance Based on Deep Reinforcement Learning", Ocean Engineering, Vol. 191, pp. 1-15, 2019.11.01

    CategoryInternational Journal
    Read More
  3. Seung-Ho Ham, Myung-Il Roh, Hye-Won Lee, "Collision Detection and Response of Multibody Systems Using a Position Difference Method and Non-Interpenetration Constraint in Shipbuilding Simulation", Ocean Engineering, Vol. 195, pp. 1-18, 2020.01.01

    CategoryInternational Journal
    Read More
  4. Joo-Pil Lee, Myung-Il Roh, Hye-Won Lee, Seung-Ho Ham, "Design of a Wreck Removal Method Considering Safety and Economy", Ships and Offshore Structures, Vol. 15, No. 10, pp. 1037-1056, 2020.12.01

    CategoryInternational Journal
    Read More
  5. Sang-Hyun Lee, Myung-Il Roh, Min-Jae Oh, Ki-Su Kim, "Optimal Layout Design of an LNG FPSO: A Case Study", Journal of Offshore Mechanics and Arctic Engineering, Vol. 142, No. 041403, pp. 1-17, 2020.08.01

    CategoryInternational Journal
    Read More
  6. Seong-Hoon Kim, Myung-Il Roh, Min-Jae Oh, Sung-Woo Park, "Estimation of Ship Operational Efficiency from AIS Data Using Big Data Technology", IJNAOE, Vol. 12, pp. 440-453, 2020.05.21

    CategoryInternational Journal
    Read More
  7. Do-Hyun Chun, Myung-Il Roh, Seung-Ho Ham, “Optimum Arrangement Design of Mastic Ropes for Membrane-type LNG Tanks Considering the Flatness of Thermal Insulation Panel and Production Cost”, Journal of Marine Science and Engineering, Vol. 8, No. 5

    CategoryInternational Journal
    Read More
  8. 함승호, 노명일, 이종혁, “다목적 조선 해양 전용 시뮬레이터 개발을 위한 통합 시뮬레이션 방법”, 한국CDE학회 논문집, Vol. 25, No. 2, pp. 161-172, 2020.06.01

    CategoryDomestic Journal
    Read More
  9. Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, "Block Erection Simulation Considering Frictional Contact with Wire Ropes", Ocean Engineering, Vol. 217, pp. 1-24, 2020.12.01

    CategoryInternational Journal
    Read More
  10. Seung-Ho Ham, Myung-Il Roh, “Time-domain Structural Analysis During Block Turnover and Lifting Using 2D Flexible Multibody Dynamics”, Marine Structures, Vol. 75, pp. 102841.1-26, 2021.01.01

    CategoryInternational Journal
    Read More
  11. 이수민, 노명일, 하지상, 이원재, “해상 이미지로부터 선박의 위치를 추정하는 방법”, 한국CDE학회 논문집, Vol. 25, No. 3, pp. 320-328, 2020.09.01

    CategoryDomestic Journal
    Read More
  12. 이준범, 노명일, 오민재, “공간 가용성을 고려한 해양 구조물의 배관 라우팅”, 한국CDE학회 논문집, Vol. 24, No. 3, pp. 280-288, 2019.08.25

    CategoryDomestic Journal
    Read More
  13. Ki-Su Kim, Myung-Il Roh, "Dynamic Flooding Analysis Method for Intermediate Flooding Process of a Ship", Ocean Engineering, Vol. 218, pp. 108173.1-33, 2020.12.15

    CategoryInternational Journal
    Read More
  14. Sung-Jun Lee, Myung-Il Roh, Min-Jae Oh, "Image-based Ship Detection Using Deep Learning", Ocean Systems Engineering, Vol. 10, No. 4, pp. 415-434, 2020.12.01

    CategoryInternational Journal
    Read More
  15. Ki-Su Kim, Myung-Il Roh, “ISO 15016:2015-based Method for Estimating the Fuel Oil Consumption of a Ship”, Journal of Marine Science and Engineering, Vol. 8, No. 10, pp. 791:1-18, 2020.10.12

    CategoryInternational Journal
    Read More
  16. Ki-Su Kim, June-Beom Lee, Myung-Il Roh, Ki-Min Han, Gap-Heon Lee, "Prediction of Ocean Weather Based on Denoising AutoEncoder and Convolutional LSTM", Journal of Marine Science and Engineering, Vol. 8, No. 10, pp. 805:1-24, 2020.10.14

    CategoryInternational Journal
    Read More
  17. Jisang Ha, Myung-Il Roh, Seung-Ho Ham, Sung-Jun Lee, “Optimum Design of the Underwater Discharge System Based on Surrogate Modeling”, Journal of Marine Science and Technology (Taiwan), Vol. 29, No. 3, pp. 338-353, 2021.06.01

    CategoryInternational Journal
    Read More
  18. 김기수, 노명일, 정양재, 나갑주, "해기상 예측 및 가시화를 위한 응용 프로그램", 한국CDE학회 논문집, Vol. 25, No. 4, pp. 434-444, 2020.12.01

    CategoryDomestic Journal
    Read More
  19. Hye-Won Lee, Joo-Hyun Woo, Myung-Il Roh, Seung-Ho Ham, et al., "Integrated Simulation of Virtual Prototypes and Control Algorithms of Unmanned Surface Vehicles Based on a Robot Operating System", Journal of Marine Science and Technology (Taiwan)

    CategoryInternational Journal
    Read More
  20. Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, "Underactuated Crane Control for the Automation of Block Erection in Shipbuilding", Automation in Construction, Vol. 124, pp. 1-28, 2021.04.01

    CategoryInternational Journal
    Read More
Board Pagination Prev 1 ... 3 4 5 6 7 8 9 10 Next
/ 10

Powered by Xpress Engine / Designed by Sketchbook

sketchbook5, 스케치북5

sketchbook5, 스케치북5

나눔글꼴 설치 안내


이 PC에는 나눔글꼴이 설치되어 있지 않습니다.

이 사이트를 나눔글꼴로 보기 위해서는
나눔글꼴을 설치해야 합니다.

설치 취소