Research Areas 【 display / non-display 】

Research Areas 【 display / non-display 】

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Papers 【 display / non-display 】

Papers 【 display / non-display 】

• Proposal of Performance Indicators for Situational Awareness Systems from Viewpoint of STCW Convention

  Umeda Ayako, Shimizu Etsuro , 2024.05

  Marine Engineering

  DOI

• Analysis on development of international maritime safety regulation (Toward strategy formulation of international regulation for implementation of innovated technology)

  YOSHIDA Masanori, SHIMIZU Etsuro, UMEDA Ayako , 2021

  Transactions of the JSME (in Japanese)

  DOI

• Identification of the relationship between maritime autonomous surface ships and the operator’s mental workload

  Masanori Yoshida, Etsuro Shimizu, Masashi Sugomori, Ayako Umeda , 2021

  Applied Sciences

• Regulatory requirements on the competence of remote operator in maritime autonomous surface ship: Situation awareness, ship sense and goal-based gap analysis

  Masanori Yoshida, Etsuro Shimizu, Masashi Sugomori, Ayako Umeda , 2020

  Applied Sciences

• The Study of Estimation Method for Sound Exposure Level Taking Account to Ocean Environment and Moving of Source and Receiver

  HIRAI Yukino, TSUCHIYA Toshio, SHIMIZU Etsuro , 2022.01

  The Journal of the Marine Acoustics Society of Japan

  DOI

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Grant-in-Aid for Scientific Research 【 display / non-display 】

Grant-in-Aid for Scientific Research 【 display / non-display 】

• Development of high precise positioning estimation method for a free-fall type underwater observation system using underwater environment conditions.

  Project Period (FY)： 2016/04  -  2019/03  Investigator(s): Koike Yoshikazu

  Grant-in-Aid for Scientific Research(C)  Co-Investigator  16K06913 

  The project aimed to develop high accurate positioning system of a free-fall type underwater observation system that has high extension possibility of oceanographic survey. A stereo vision camera system and an inertia measurement unit sensor were installed inside a glass sphere. The practical measurement was carried out in an indoor experiment pool or actual sea. At first, the acquisition method of both sensor noise model and sensor noise simulation data for the employed IMU sensors was proposed. Additionally, the algorithm for improvement of positioning in the combination with range sensor data was proposed. The proposed algorithm validity was confirmed on the land experiment by using a cart. Stereo vision analysis was also applied to estimate trajectory of the observation system. The update algorithm of feature points was also investigated because the feature points extracted by the recorded images are also appeared or vanished during the observation system motion.

• Research on Seawater and Marine Sediment Sampling in Shallow Shore Region by Remotely Steerable Unmanned Battery Boat

  Project Period (FY)： 2016/04  -  2019/03  Investigator(s): TAKAMASA Tomoji

  Grant-in-Aid for Scientific Research(A)  Co-Investigator  16H02431 

  A new type of seawater and marine sediment sampling system using remotely steerable unmanned battery boat has been developed and designed in this study. The system has some special and unique features that set it apart from existing marine sampling system. First, it utilizes an innovative proactive stabilizer which can reduce pitching, rolling, and heaving of the boat by two pairs of vertical moving floats and three-dimensional thrusting propellers. Some tests in a port of nuclear power plant have revealed the effectiveness of the system. This system could lead to significant possibility in seawater and marine sediment sampling even in rough sea condition.

Lesson Subject 【 display / non-display 】

Lesson Subject 【 display / non-display 】