• Title/Summary/Keyword: 관성센서 뭉치

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A Study on Error Analysis of Dual-Axis Rotational Inertial Navigation System Based on Ring Laser Gyroscope (링레이저 자이로 기반 2축 회전형 관성항법장치 오차해석에 대한 연구)

  • Kim, Cheon-Joong;Yu, Hae-Sung;Lee, In-Seop;Oh, Ju-Hyun;Lee, Sang-Jeong
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.46 no.11
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    • pp.921-933
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    • 2018
  • There is a method to enhance the pure navigation performance of INS(Inertial Navigation System) through the rotation of inertial measurement unit to compensate error sources of inertial sensors each other and that INS using this principle of operation is called rotational INS. In this paper, the exact error analysis of rotational INS based on ring laser gyro considering the coupling effect with gravity and earth rate is performed to evaluate the navigation performance by inertial sensor error sources. And error analysis and performance evaluation result confirmed by modelling and simulation is also proposed in this paper.

Study of ARS using Ring Laser Gyro (Ring Laser Gyro를 이용한 ARS에 관한 연구)

  • Jeong, Sang-Ki;Choi, Hyeung-Sik;Ji, Dae-Hyeong;Jung, Dong-Wook;Kwon, O-Soon;Shin, Chang-Joo;Seo, Jung-Min
    • Journal of Ocean Engineering and Technology
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    • v.31 no.2
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    • pp.164-169
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    • 2017
  • Studies were performed on an ARS using SDINS's RLG and the geomatic sensor. To develop the ARS, experiments were performed to determine the characteristics of the RLG and geomatic sensor. Based on the results, to reduce the angular position errors of the RLG, which accumulate from the angular velocity data, an algorithm was studied that uses the Extended Kalman filter (EKF) to compensate the RLG data and geomatic sensor data. To verify the performance of the developed algorithm for reducing the cumulative angular errors, experiments that included the developed EKF were performed. Through these, it was shown that a drastic reduction in the angular errors of the RLG were achieved.