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    AI Overview
    Fiber Optic Gyroscope (FOG) IMU accuracy is primarily influenced by
    temperature-induced drift in optoelectronic components, scale factor errors, and environmental vibrations . High-performance FOGs require precise factory calibration to manage these factors, particularly in dynamic environments like aviation or underwater navigation, where rapid temperature changes or vibrations affect sensor bias and stability.
    Key factors influencing FOG IMU accuracy include:
    • Temperature Fluctuations: Changes in temperature are the primary source of error, affecting the bias stability and scale factor of the fiber optic gyroscopes. Effective insulation and calibration are necessary to manage this.
    • Scale Factor and Bias Drift: The precision of FOGs is heavily dependent on the scale factor, which characterizes dynamic performance. Residual gyroscope bias errors can cause significant long-term navigation inaccuracies.
    • Mechanical Vibration and Shock: While FOGs are better at handling vibrations than MEMS sensors, high vibration environments (e.g., aerospace) can still degrade performance if not properly calibrated.
    • Calibration Quality : The accuracy is affected by how well the sensor is calibrated for factors like installation errors, scale factors, and internal lever-arm parameters.
    • Sensor Start-up Behavior : FOG characteristics differ between the start-up stage and a stable working state, making proper compensation for these differences critical for high-precision, rapid-start applications.
    • Time Asynchronicity : Asynchronous sampling of inertial sensors during high-dynamic tests can result in significant velocity update errors.
    • Magnetic Fields : Like other IMUs, FOGs can be susceptible to magnetic interference.
    Effective mitigation strategies include rigorous temperature compensation algorithms, such as those using neural networks to model nonlinear errors, as well as robust vibration-resistant structural design.
    • MEMS Vs FOG: What Inertial System Should You Choose?
      Feb 10, 2022 — MEMS technology is highly sensitive to temperature fluctuations, which require careful temperature compensation. By contrast, a we...
      Advanced Navigation
    • A time asynchronous parameters calibration method of high ...
      Feb 16, 2023 — Nowadays, strap-down inertial navigation systems (SINSs) have been widely used in the navigation and localization fields of ships,
      IOPscience
    • Measurement Error and Calibration of FOG IMU - Medium
      Feb 28, 2024 — The precision of inertial devices in FOG IMU is mainly related to external environment mechanics and temperature excitation. The o...
      Medium
    • Study on FOG scale factor error calibration in start-up stage based ...
      The scale factor is one of the critical parameters to characterize the dynamic performance of the FOG. Due to the temperature sens...
      ScienceDirect.com
    • A Novel Co-Calibration Method for a Dual Heterogeneous ...
      Oct 12, 2023 — 3 CO-CALIBRATION METHOD FOR A DUAL HETEROGENEOUS INS The main error of the rotation-modulated FOG-INS generated during long-term n...
      The Institute of Navigation
    • Study on nonlinear error calibration of fiber optical gyroscope scale ...
      Feb 28, 2022 — However, the F-P filter suffers from demodulation error drift in a temperature-changing environment. The non-repeatable wavelength...
      ScienceDirect.com
    • FOG & MEMS combined IMU - Tamagawa Seiki
      IMU is used for attitude control in security robot. ... The combination of GNSS and IMU enables not only tractor heading and attit...
      TAMAGAWA SEIKI CO., LTD.
    • Application and Development of Fiber Optic Gyroscope Inertial ...
      In underground space, FOG-INS faces various challenges, such as narrow space, harsh environment, signal interference, and lack of ...
      National Institutes of Health (NIH) | (.gov)
    • What You Should Know About Your IMU Data – Noraxon
      Nov 22, 2021 — Environmental factors can affect IMU data processing. Some factors that can affect IMU data include: * **Magnetic fields** Magneto...
      Noraxon
    • MEMS Vs FOG: What Inertial System Should You Choose?
      Feb 10, 2022 — MEMS technology is highly sensitive to temperature fluctuations, which require careful temperature compensation. By contrast, a we...
      Advanced Navigation
    • A time asynchronous parameters calibration method of high ...
      Feb 16, 2023 — Nowadays, strap-down inertial navigation systems (SINSs) have been widely used in the navigation and localization fields of ships,
      IOPscience
    • Measurement Error and Calibration of FOG IMU - Medium
      Feb 28, 2024 — The precision of inertial devices in FOG IMU is mainly related to external environment mechanics and temperature excitation. The o...
      Medium
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    Scholarly articles for factors influencing fog imu accuracy

    … and negative FOG scale factors using a low- precision … - ‎ Pan - Cited by 5
    A new calibration method of MEMS IMU plus FOG IMU - ‎ Lu - Cited by 38
    In-field fast calibration of FOG -based MWD IMU for … - ‎ Li - Cited by 27

    Factors Affecting Inertial Navigation Accuracy and Optimization ...


    GuideNav
    https://guidenav.com › blog › factors-affecting-inertial-...
    GuideNav
    https://guidenav.com › blog › factors-affecting-inertial-...
    Factors Affecting Accuracy: Sensor Errors :Accelerometer errors (such as bias, scale factor errors, noise, etc.) and gyroscope errors (such as bias drift, ...
    Missing: influencing ‎| Show results with: influencing

    Measurement Error and Calibration of FOG IMU


    Medium · Ericco Inertial Technology
    1 year ago
    Medium · Ericco Inertial Technology
    1 year ago
    In addition, parameters calibrated at room temperature will reduce FOG IMU measurement accuracy if applied at high or low temperatures. Methods ... Read more

    MEMS Vs FOG: What Inertial System Should You Choose?


    Advanced Navigation
    https://www.advancednavigation.com › Tech Articles
    Advanced Navigation
    https://www.advancednavigation.com › Tech Articles
    Feb 10, 2022 — Both FOG and MEMS accuracy are impacted by variations in temperature . This problem is typically mitigated by calibrating the system across the ... Read more
    Missing: influencing ‎| Show results with: influencing

    A time asynchronous parameters calibration method ...


    IOPscience
    https://iopscience.iop.org › article
    IOPscience
    https://iopscience.iop.org › article
    by J Chang · 2023 · Cited by 6 — Thus, factory calibration is generally implemented to improve the precision of FOG-IMU by reducing the influences of error parameters, such as ... Read more

    A novel hybrid calibration method for FOG-based IMU


    ScienceDirect.com
    https://www.sciencedirect.com › article › abs › pii
    ScienceDirect.com
    https://www.sciencedirect.com › article › abs › pii
    by B Xu · 2019 · Cited by 22 — In this paper, a hybrid grading calibration method is proposed. High-precision calibration parameters is available using low precision turntable with the same ... Read more

    Application and Development of Fiber Optic Gyroscope Inertial ...


    National Institutes of Health (NIH) | (.gov)
    https://pmc.ncbi.nlm.nih.gov › articles › PMC10303591
    National Institutes of Health (NIH) | (.gov)
    https://pmc.ncbi.nlm.nih.gov › articles › PMC10303591
    by H Xu · 2023 · Cited by 22 — Thirdly, the presence of signal interference in the underground space, such as geomagnetic fields, can cause errors in the FOG and the accelerometer, which in ... Read more

    MEMS vs FOG: What Inertial System Should You Choose?


    Inertial Labs
    https://inertiallabs.com › Resources › White Papers
    Inertial Labs
    https://inertiallabs.com › Resources › White Papers
    Nov 26, 2024 — Linear acceleration can cause significant offsets, directly affecting the accuracy of position estimation in INS. Read more

    Influence analysis of IMU accuracy on spoofing detection ...


    Ericco Inertial Technology
    https://www.ericcointernational.com › application › infl...
    Ericco Inertial Technology
    https://www.ericcointernational.com › application › infl...
    Jan 10, 2024 — IMU is used to measure the angular velocity and acceleration of objects. The accuracy of the IMU determines the accuracy .
    5.0 (820)

    Examining the High Precision FOG IMU market factors ...


    LinkedIn · Veritik
    1 week ago
    LinkedIn · Veritik
    1 week ago
    The High Precision FOG IMU market is significantly shaped by various complex factors including trade regulations and evolving import-export ... Read more

    Estimated the scale factors of accelerometers triad of FOG ...


    ResearchGate
    https://www.researchgate.net › figure › Estimated-the-sc...
    ResearchGate
    https://www.researchgate.net › figure › Estimated-the-sc...
    The error of its Inertial Measurement Unit ( IMU ) plays an important role in INS accuracy . After the error of the IMU is calibrated and compensated, the ... Read more
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