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Fiber Optic Gyroscope (FOG) IMUs are
high-precision, solid-state navigation systems ideal for aerospace, defense, and strategic applications requiring superior accuracy, stability, and low-noise performance, often in GPS-denied environments
. They offer excellent shock/vibration resistance and thermal stability for UAVs, missiles, and satellites.
Key Aspects of FOG IMUs in Aerospace
- Performance: FOG IMUs provide high-level precision in angle random walk (ARW) and bias instability, making them suitable for tactical and navigation-grade requirements. They are often used for stabilizing electro-optical (EO)/FLIR sensors, cameras, and radar systems.
- Technology: These units utilize the Sagnac effect , passing light through optical fiber coils to measure, with extreme accuracy, rotational changes. They are generally more robust than mechanical gyros, offering high-reliability and low-maintenance operation.
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Applications:
- UAVs: Essential for precise navigation in medium-to-large unmanned platforms.
- Missiles & Defense: Used in, for example, EMCORE Corporation's DSP-1760/3000 series for, according to GuideNav, guiding missiles and autonomous targeting.
- Space & Aviation: Suitable for satellite stabilization, orbital, and aircraft navigation, say sources like Emcore LLC .
- Common Models: Northrop Grumman's LN-200C is a widely used, small, lightweight, and reliable FOG IMU for aerospace applications. The Honeywell HG2802 is another example, providing a high-performance solution for demanding, non-ITAR restricted, and commercial requirements.
- Considerations: FOG IMUs are typically more expensive and consume more power than MEMS-based options. They can be susceptible to magnetic interference, although modern designs and manufacturing techniques help to mitigate these issues.
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What is the Difference Between MEMS and FOG IMU?Apr 10, 2024 — FOG IMUs are typically larger and heavier and are typically used in large systems such as aerospace and defense applications. MEMS...Ericco Inertial Technology
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HG2802 Fiber Optic Gyro Inertial Measurement Unit | HoneywellThese IMUs are developed to affordably meet the needs of a broad range of guidance and control applications. Its small-size, light...Honeywell Aerospace
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Selecting an Inertial Measurement Unit (IMU) for UAV ...FOG IMUs use a solid-state technology based on beams of light propagating through a coiled optical fiber. They are less sensitive ...Unmanned Systems Technology
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HG2802 Fiber Optic Gyro Inertial Measurement Unit
Honeywell Aerospace
https://aerospace.honeywell.com
› navigation-and-sensors
Honeywell Aerospace
https://aerospace.honeywell.com
› navigation-and-sensors
The HG2800 is a dual-use non-ITAR restricted
IMU
designed specifically to meet both commercial/industrial and military needs.
Read more
LN-200 FOG Family Advanced Airborne
Northrop Grumman
https://www.northropgrumman.com
› assured-navigation
Northrop Grumman
https://www.northropgrumman.com
› assured-navigation
The LN-200 is a small, lightweight, highly reliable, state-of-the art, fiber-optic, all-altitude, strap down Inertial Measurement Unit (
IMU
).
Read more
What is the Difference Between MEMS and FOG IMU?
Ericco Inertial Technology
https://www.ericcointernational.com
› application › wh...
Ericco Inertial Technology
https://www.ericcointernational.com
› application › wh...
Apr 10, 2024
—
FOG
IMUs are typically larger and heavier and are typically used in large systems such as
aerospace
and defense
applications
. MEMS IMUs are ...
Read more
(820)
LN-200 FOG IMU: Strengths, Limitations & Alternatives
GuideNav
https://guidenav.com
› blog › what-are-the-key-strengt...
GuideNav
https://guidenav.com
› blog › what-are-the-key-strengt...
The LN-200 series Fiber Optic Gyroscope (
FOG
)
IMU
has long been regarded as a reliable, battle-tested solution for tactical-grade inertial navigation.
Read more
Inertial Measurement Units | Collins Aerospace
RTX
https://www.rtx.com
› inertial-navigation-systems
RTX
https://www.rtx.com
› inertial-navigation-systems
The LITIS® tactical grade Inertial Measurement Unit (IMU)
offers near fiber optic gyro (FOG) performance
in a compact, lightweight, rugged design. It has the ...
Read more
CIRUS-A High-Performance FOG Inertial Measurement ...
Emcore LLC
https://www.emcore.com
› products › post › cirus-a-hig...
Emcore LLC
https://www.emcore.com
› products › post › cirus-a-hig...
EMCORE's CIRUS-A is a high-performance FOG IMU
that delivers state-of-the-art, strategic-grade performance for inertial navigation, guidance, pointing and ...
Read more
IMU Application Guide
Safran Federal Systems
https://www.safranfederalsystems.com
› imu-applicatio...
Safran Federal Systems
https://www.safranfederalsystems.com
› imu-applicatio...
IMUs provide rate and acceleration data in the 'x', 'y' and 'z' axis
offering systems live feedback on their movement. In the case of a guided missile, this ...
Read more
FOG IMU: The Irreplaceable Solution for Strategic-Level ...
memsmag.com
https://www.memsmag.com
› fog-imu-in-cutting-edge-d...
memsmag.com
https://www.memsmag.com
› fog-imu-in-cutting-edge-d...
Jul 29, 2025
—
Fiber optic gyroscope IMU (FOG IMU) and MEMS IMU
have significant differences in accuracy, environmental adaptability, reliability
, ...
Read more
Selecting an Inertial Measurement Unit (IMU) for UAV ...
Unmanned Systems Technology
https://www.unmannedsystemstechnology.com
› feature
Unmanned Systems Technology
https://www.unmannedsystemstechnology.com
› feature
EMCORE is a supplier of high-accuracy FOG IMUs
that are designed with the low SWaP requirements of UAVS and unmanned systems in mind. The EN-150 is currently ...
Read more
New IMU's Deliver Precise Pointing, Stabilization and ...
Defense Advancement
https://www.defenseadvancement.com
› Features
Defense Advancement
https://www.defenseadvancement.com
› Features
The new FOG-based IMU is
extremely reliable
and doesn't cause noise jitter, which can affect accuracy. With this IMU our celestial navigation system is able to ...
Read more
Scholarly articles for fog imu for aerospace applications |
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