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IMU(Inertial Measurement Unit) , ,           ,  IMU        .  MEMS AHRS(MEMS : Micro Electro Mechanical System, AHRS : Attitude and Heading Reference System)     MEMS AHRS     IMU       .    ,  ,    AHRS      , ,           .  AHRS     ,                .    AHRS           ,          .     INS(Integrated Navigation System)  VDR(Voyage Data Recorder)                . 【The IMU(Inertial Measurement Unit) which is the expensive equipment has been used as a special limited area, usually in measurement of posture of applying to the areas of ship, submarine, aircraft and military equipment application. However, in the current situation, MEMS AHRS technology can replace the high-priced IMU in MEMS AHRS selected application field. In this paper, wireless hull motion measurement system was suggested for measuring key elements of ship's movement such as rolling, pitching and yawing using gyro, acceleration and magnetic sensors of AHRS. In order to reduce the error such as instantaneous acceleration, effects and vibration of geomagnetic, we have adopted the sensors equipped with Kalman filtering. The Wireless hull motion measurement system using AHRS sensors was tested in actual ship and it could easily be applied in limited installation circumstances of the ship. In the future, this system can be useful in the navigation safety and marine accident analysis by using with ship equipment such as INS or VDR in the maritime.】

A Study on the Wireless Ship Motion Measurement System Using AHRS