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OEM Fiber Optic Gyroscope (FOG) Inertial Measurement Unit (IMU) calibration and testing procedures are rigorous, designed to ensure high precision in navigation and stability, typically for aerospace, defense, and autonomous systems
. Manufacturers like SBG Systems, Inertial Labs, and GuideNav perform extensive factory calibrations, including temperature compensation and multi-axis rate table testing.
Key OEM Manufacturers & Technologies
- Inertial Labs: Known for FOG and MEMS-based IMUs (e.g., IMU-FI-200T) for GNSS-denied environments, featuring, high-performance, and calibrated sensors.
- SBG Systems: Manufactures high-end IMUs with a focus on comprehensive factory calibration (temperature, motion, and accuracy).
- GuideNav: Offers high-precision FOG IMUs (GFIMU400/120) with ultra-low bias drift (0.005°/h).
- Emcore Corporation: Specializes in high-performance FOG and RLG inertial sensors.
- Ericco: Produces high-accuracy FOG IMUs with customization options.
FOG IMU Calibration Procedures
Factory calibration is essential to account for sensor errors such as bias, scale factor, and misalignment.
- Temperature Calibration: Sensors are tested across a wide temperature range (e.g., -45°C to 75°C) to map and compensate for thermal drift.
- Rate Table Testing: IMUs are mounted on multi-axis rate tables to analyze performance under motion, including rate ranges up to ±500 °/s.
- Error Modeling: Compensation is applied for non-linearity, cross-axis effects, and gyro-g effects (acceleration-sensitive drift).
- Calibration Techniques: Includes gyroscopic bias estimation under static conditions and multi-position testing for accelerometer calibration.
Testing & Verification Procedures
- Final Acceptance Test: Every unit undergoes final functional checks to verify interface, API, and overall performance.
- Environmental Testing: Testing for vibration and shock resilience to ensure survival in rugged environments.
- Aging Process: High-end units may undergo an aging process to monitor long-term performance and stability.
- Continuous Built-in Test (BIT): FOG IMUs often include internal diagnostics for continuous monitoring of health.
Key Performance Indicators (KPIs) for FOG IMUs
- Bias Stability: Often <0.01°/h for tactical grade.
- Angular Random Walk (ARW): Can be as low as 0.003 m/s/√hr.
- Temperature Range: Generally -40°C to +85°C.
Manufacturers often provide traceable, ISO 17025 compliant calibration certificates with their products.
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Factory Calibration and Tests | SBG SystemsSensor calibration When dealing with sensors error parameters, we consider that a good calibration is always better and more relia...SBG Support Center
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SBG SYSTEMS IMU Production ProcessJul 23, 2024 — welcome to SPG Systems world's trusted manufacturer of motion and navigation sensors and software let's see how these sensors are ...Unmanned Systems Technology · SBG Systems
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IMU-FI-200T | Fiber Optic Gyroscope (FOG) and MEMS ...The unit delivers highly accurate linear acceleration and angular rate data with extremely low noise and excellent reliability. Th...Unmanned Systems Technology
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FOG IMU calibration
memsmag.com
https://www.memsmag.com
› fog-imu-calibration
memsmag.com
https://www.memsmag.com
› fog-imu-calibration
Apr 17, 2025
—
Explore high-precision calibration for FOG IMU
(Fiber Optic Gyro Inertial Measurement Unit) across full temperature ranges.
Read more
Calibration of Inertial Measurement Units
SPEKTRA LABS
https://www.spektra-labs.com
› ... › Calibration
SPEKTRA LABS
https://www.spektra-labs.com
› ... › Calibration
SPEKTRA LABS offers you
manufacturer
-independent
calibration and testing
services that ensure the highest precision and long-term reliability of IMUs.
Read more
IMU - Inertial Measurement Unit
SBG Systems
https://www.sbg-systems.com
› Glossary
SBG Systems
https://www.sbg-systems.com
› Glossary
An
IMU
measures and reports a specific force, angular rate, and sometimes the magnetic field surrounding the body.
Inertial Navigation Systems | INS
Advanced Navigation
https://www.advancednavigation.com
› inertial-navigati...
Advanced Navigation
https://www.advancednavigation.com
› inertial-navigati...
All Advanced Navigation INS & AHRS products are calibrated
, tested and checked for conformance to relevant industry standards before leaving the factory.
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MEMS Inertial Measurement Unit(IMU) Manufacturer
GuideNav
https://guidenav.com
› mems-imu
GuideNav
https://guidenav.com
› mems-imu
Perform zero-point calibration, dynamic testing, and temperature compensation
on the accelerometers and gyroscopes using an automated testing platform to ensure ...
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SkyMEMS: Professional Inertial Navigation Products ...
SkyMEMS
https://www.skymems.com
SkyMEMS
https://www.skymems.com
SkyMEMS is a professional inertial navigation products manufacturer
, Provides high-precision MEMS accelerometer, MEMS gyro, and AHRS products and solutions.
Inertial Labs: Innovating GPS-Aided Navigation Systems
Inertial Labs
https://inertiallabs.com
› inertial-labs-inc
Inertial Labs
https://inertiallabs.com
› inertial-labs-inc
Inertial Labs is a leading designer, integrator, and
manufacturer
of cutting-edge Inertial Measurement Units (IMUs), GPS-Aided Inertial Navigation Systems (Â ...
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FOG Inertial Measurement Units | Fiber optic gyroscope ...
Unmanned Systems Technology
https://www.unmannedsystemstechnology.com
› fog-in...
Unmanned Systems Technology
https://www.unmannedsystemstechnology.com
› fog-in...
GuideNav's
FOG
-based inertial measurement units (IMUs) are built for applications demanding precise navigation and long-term stability.
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FOG Inertial Measurement Unit (IMU) Factory
Ericco Inertial Technology
https://www.ericcointernational.com
› IMU
Ericco Inertial Technology
https://www.ericcointernational.com
› IMU
Ericco
not only provides the standard FOG IMU products, but also customizes FOG IMU according to the customers' special requirements.
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Missing:
oem
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manufacturer
Motus | High Accuracy MEMS IMU
Advanced Navigation
https://www.advancednavigation.com
› ... › MEMS IMU
Advanced Navigation
https://www.advancednavigation.com
› ... › MEMS IMU
Motus is put through Advanced Navigation's intensive
calibration process
to provide consistently accurate data over an extended temperature range of -40°C to 85 ...
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