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Miniature Fiber Optic Gyroscopes (FOG Sensors) & IMUs for UAVs & Robotics Malta
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MostaTech

Miniature Fiber Optic Gyroscopes (FOG Sensors) & IMUs for UAVs & Robotics

MostaTech is a leading developer and manufacturer of fiber optic gyroscopes (FOGs) and FOG-based inertial measurement units (FOG IMUs) for UAVs (unmanned aerial vehicles), drones and robotics.

Our high-accuracy inertial sensors provide precision motion and orientation measurement in rugged, lightweight packages. Applications for UAVs include flight control and navigation systems, plus gimbal and image stabilization. Ideally suited to unmanned aerial and autonomous applications, MostaTech fiber optic gyroscopes and IMUs are used in autonomous aerial, robotic and agriculture systems.

Based on 40-micron polarization maintaining (PM) fibers, our UAV gyros are constructed using a sophisticated spliceless technology that fabricates the entire fiber optic assembly from a single fiber length. This jointless construction results in zero excess optical loss. Precision fusion-tapering and soldering processes provide highly mechanically stable and temperature-stable components, with stringent test procedures maintaining quality at all stages of production.

Our miniature FOG offer a variety of advantages for UAV and unmanned systems applications:

  • Fine-tuned assembly provides immunity to electromagnetic interference, eliminating the need for heavy shielding
  • Bias immunity to vibration and gravitational acceleration
  • No dead zones or hysteresis
  • Effectively instant response
  • No cross-axis sensitivity error.

Additionally, all MostaTech inertial sensors are low-cost, ITAR-free solutions.

FOG Inertial Measurement Units

Low-SWaP FOG IMUs for drones & robotics

Mostatech Low-SWaP FOG IMUs for drones & roboticsThe U Series is a range of miniature FOG-based inertial measurement units (IMUs) with a lightweight and compact design and extremely low power consumption. The low-SWaP units combine three of our smallest fiber optic gyroscopes with three MEMS accelerometers to deliver high performance in a small package.

All models feature a fully-integrated ADC board with RS422 serial communications. The U Series is ideal for a range of unmanned systems applications, including inertial navigation for UAVs, USVs and UUVs, and drone flight control.

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Learn more: U Series

VG220 Series

Ultra-miniature UAV FOG Sensors

smallest fiber optic gyrosThe VG220 series are our newest, and smallest-ever FOG sensors for UAVs and robotics. With high-accuracy performance and a compact and lightweight design, it measures just 33 mm in diameter and weighs only 15-20 grams.

Like all MostaTech gyroscopes, the ultra-miniature units contain fully integrated optics and electronics.

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Learn more: VG220 Series

VG1703 Series

Ultra-compact, lightweight UAV FOG sensors

The VG1703 series of FOG sensors features excellent bias and angle random walk in an extremely compact package that is ideal for SWaP (size, weight and power)-constrained UAVs and unmanned systems. With durable aluminium, hard plastic or μ-metal construction, the gyros are extremely resistant to shock and vibration, and exhibit a 15-year mean time before failure (MTBF).

VG1703 robust fiber optic gyros

VG1703SPE fiber optic gyro sensors

VG1703SMS magnetically immune fiber optic gyros

The VG1703 Series includes three variants of analogue fiber optic gyros, offering a series of options for construction, performance and durability.

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Learn more: VG1703 Series

VG091 Series

Thumb-sized FOGs for UAVs

Compact rugged FOG sensors for UAVThe VG091 Series of miniature fiber optic gyroscopes features cylinder-shaped lightweight and rugged aluminium alloy construction that makes it an ideal solution for space- and layout-limited UAVs and unmanned vehicles.

These thumb-sized gyro sensors combine instant start-up and low power consumption, and boast a 15-year lifetime.

The VG091 Series includes four variants of fiber optic gyros with analog and digital outputs.

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Learn more: VG091 Series

VG191A – smallest ever differential-output FOG sensor for UAVs

VG191A thumb-sized fiber optic gyroThe VG191A is our smallest ever cylinder-shaped fiber optic gyroscope, enclosed in a rugged aluminium alloy or μ-metal package which is only 24mm in diameter, 40mm in length and weighing just 30 grams (40 grams for shielded one).

With a 15-year lifetime and enhanced resistance to shock, vibration and temperature, the miniature FOG is ideal for demanding UAV and unmanned systems requirements. The shielded model also exhibits an ultimate magnetic immunity.

The compact, lightweight sensor delivers excellent performance with 0.015 deg/√h ARW (angle random walk) and a bias stability of 1 degree/hour.

VG191AD – compact digital FOG for UAVs

VG191AD thumb-sized fiber optic gyrosThe VG191AD is a compact digital FOG sensor that uses a 24-bit ADC and powerful processor to provide precise digital output via RS422 at 8 kHz. The digital output contains raw angular rate data and gyro parameters, and can be factory-programmed to provide real-time compensated data.

The gyro’s sensing assembly is fabricated from a single 200m length of high-quality single mode optical fiber, using a precision fusion-tapering process. State-of-the-art polarization control technology provides the gyro with excellent minimum magnetic sensitivity.

Learn more: VG091 Series

VG103S Series

Ultra-compact gyros for UAVs

The VG103S series features an ultra-compact design that provides high-levels of resistance to shock and vibration. Optional magnetic shields are available for all cylinder-shaped models.

The high-performance gyros are ideal for a range of UAV and robotics applications, including flight control and antenna and platform stabilization.

fiber optic gyro VG103S

fiber optic gyro series VG103S

Fiber optic gyro VG2103S

The VG103S Series includes four variants of fiber optic gyros – there are models with analog output (VG103S and VG2103S) and digital output (VG103SD and VG103S-2LND).

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Learn more: VG103S Series

G Series Fiber Optic Gyros

3-axis FOG sensors for UAVs and drones

Mostatech 3-axis fiber optic gyrosThe G181 and G121 are high-accuracy fiber optic gyro units that consists of three gyro sensors mounted on a solid frame, as well as a fully-integrated ADC board.

The triple-axis fiber optic gyro G181 features low noise performance and is available in aluminium or μ-metal housing, while the G121 is an ultra-low-SWaP unit in an aluminium housing (with optional internal shielding). The new G321 has even smaller form-factor and offers high-speed data output.

The gyroscopes are ideal for a variety of UAV and drone applications, such as gimbal and camera stabilization.

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Specifications

U-Series FOG IMUs Specifications:

U183/U183M U121D U123D/U123DM
Dimensions (mm) dia46 x 111 / dia46 x 106 63 x 56 x 40 dia40 x 90
Weight (grams) 200/250 195 150/200
Power (W) 2 1.5 1.5W
Gyroscope Input Range (°/s) 300 400 400
Gyroscope Bias RMS (°/h) 1 1 1
Gyroscope ARW (°/√h) 0.03 0.05 0.05
Magnetic response (°/h/Gauss) 3 / 0.01 0.3 0.3 / 0.01
Accelerometer Range (g) 10 10 10
Accelerometer Bias stability (mg) 0.2 0.2 0.2
Accelerometer Bandwidth (Hz) 250 250 250
Data rate (kHz) 4 4 4
Baud rate (kBd) 921.6 921.6 921.6
Vibration (g, RMS) 6 6 6
Shock Resistance (g) 350 350 350
Operating Temperature (°C) -40 – +70 -40 – +70 -40 – +70
Housing Aluminium alloy / μ-metal Aluminium alloy Aluminium alloy / μ-metal

Fiber Optic Gyro VG220 Series Specifications:

VG221 VG221MS VG221LN VG221LN-MS
Dimensions (diameter x height mm) 33 x 12 33 x 12 33 x 12 33 x 12
Weight (gram) 15 25 15 25
Power (W) 0.3 0.3 0.5 0.5
Input Range (°/s) 400 400 400 400
Bias RMS (°/h) 3 1 3 1
ARW (°/√h) 0.05 0.05 0.025 0.025
Bandwidth (kHz) 1 1 1 1
Magnetic response (°/h/Gauss) 4 0.1 4 0.1
Vibration (g, RMS) 12 12 12 12
Shock Resistance (g) Up to 1200 Up to 1200 750 750
Operating Temperature (°C) -40 to +70 -40 to +70 -40 to +70 -40 to +70
MTBF (hours) 150 000 150 000 70 000 70 000
Housing Al alloy μ-metal Al alloy μ-metal

Fiber Optic Gyro VG1703 Series Specifications:

VG1703 VG1703S-MS VG1703SPE
Dimensions
(diameter x height mm)
40 x 19 40 x 12 40 x 12
Weight (gram) 35 33 18
Power (W) 0.5 0.5 0.25
Input Range (°/s) 130 300 300
Bias RMS (°/h) 1 1 1
ARW (°/√h) 0.008 0.01 0.025
Bandwidth (kHz) 1 1 1
Magnetic Response
(°/h/Gauss)
3 0.1 3
Vibration (g, RMS) 30 12 12
Shock Resistance (g) 1200 350 350
Operating Temperature
(°C)
-40 to +70 -40 to +70 -40 to +70
MTBF (years) 15 15 30
Housing Aluminium μ-metal Aluminium & plastic

Fiber Optic Gyro VG091 Series Specifications:

VG091A / VG091A-MS VG091A-4LN VG191A / VG191A-MS VG191AD / VG191AD-MS
Dimensions
(diameter x height mm)
24 x 52 24 x 52 24 x 40 24 x 48
Weight (gram) 30 / 50 50 30 / 40 30 / 45
Power (W) 0.5 0.5 0.5 0.5
Input Range (°/s) 300 60 250 300
Bias RMS (°/h) 1 1 2 1
ARW (°/√h) 0.04 0.01 0.015 0.012
Bandwidth (kHz) 1 1 1 0.6
Data rate (kHz) 8
Baud rate (kBd) 921.6
Magnetic Response
(°/h/Gauss)
3 / 0.1 0.03 4 / 0.1 3 / 0.05
Vibration (g, RMS) 18 18 18 18
Shock Resistance (g) 750 350 750 750
Operating Temperatures
(°C)
-40 to +70 -40 to +70 -40 to +70 -40 to +70
MTBF (years) 15 15 15 15
Housing Al alloy / μ-metal μ-metal Al alloy / μ-metal Al alloy / μ-metal

Fiber Optic Gyro VG103S Series Specifications:

VG103S VG103SD VG103S-2LND VG2103S
Dimensions
(diameter x height mm)
55 x 17 55 x 17 55 x 17 60 x 60 x 17
Weight (gram) 40 40 40 80
Power (W) 0.5 0.5 0.5 0.5
Input Range (°/s) 350 400 200 350
Bias RMS (°/h) 1 1 1 1
ARW (°/√h) 0.02 0.015 0.007 0.02 / 0.07
Bandwidth (kHz) 1 0.6 0.6 1
Data rate (kHz) 8 8
Baud rate (kBd) 921.6 921.6
Vibration (g, RMS) 30 18 18 18
Shock Resistance (g) 1200
(3000 optional)
350 350 1200
(3000 optional)
Operating Temperature (°C) -40 to +70 -40 to +70 -40 to +70 -40 to +70 / -40 to+125
MTBF (years) 15 15 15 15
Housing Hard plastic Hard plastic Hard plastic Aluminium alloy

G Series 3-Axis Fiber Optic Gyros Series Specifications:

G181 / G181M G121 / G121M G321M
Dimensions (mm) 46 x 106 52 x 58 x 37 53 x 53 x 36
Weight (gram) 160 / 200 125 / 145 145
Power (W) 2 2 2
Input Range (°/s) 300 400 400
Bias RMS (°/h) 1 3 / 1 1
ARW (°/√h) 0.015 0.025 0.025
Bandwidth (kHz) 0.7 0.7 1
Magnetic Response (°/h/Gauss) 3 / <0.2 3 / 0.3 0.3
Data rate (kHz) 4.8 4.8 8
Baud rate (kBd) 921.6 921.6 921.6
Shock Resistance (g) 12 6 6
Vibration (g, RMS) 750 / 350 350 350
Operating Temperature (°C) -40 to +70 -40 to +70 -40 to +70
Housing Al alloy / μ-metal Al alloy Al alloy

Products

Fiber Optic Gyro VG2103S-3000

Ruggedized Fiber Optic Gyroscope

VG221LN FOG Sensor

Ultra-miniature low-noise open-loop FOG

G321M Fiber Optic Gyro

Rugged High-Speed FOG for Demanding Unmanned Applications

VG1703S-MS Fiber Optic Gyro

Ultra-compact, non-ITAR FOG sensor with magnetic immunity

VG221LN-MS FOG sensor

Ultra-miniature low-noise FOG with magnetically-shielded housing

VG091A Fiber Optic Gyroscope

Thumb-sized open-loop FOG with low power consumption

VG091A-4LN Fiber Optic Gyroscope

Thumb-sized low-power & low-noise FOG with magnetically-shielded housing

G181 Fiber Optic Gyro

Low-power three-axis FOG unit with aluminium alloy casing

G181M Fiber Optic Gyro

Low-power three-axis FOG unit with magnetically-shielded casing

FOG IMU U123D

Small, low power FOG-based inertial measurement unit

FOG IMU U121D

Miniature, low power FOG-based inertial measurement unit

Fiber Optic Gyro G121

3-axis miniature low-noise fiber optic gyroscope

FOG IMU U183(M)

Low noise, ultra-compact FOG-based inertial measurement unit

Fiber Optic Gyro VG221

Smallest, lightweight, accurate fiber optic gyroscope

Fiber Optic Gyro VG2103S

Compact, robust and accurate fiber optic gyroscope

Fiber Optic Gyro VG191A

Thumb-sized precision analog gyroscope sensor

Fiber Optic Gyro VG191AD

Thumb-sized precision digital gyroscope sensor

Fiber Optic Gyro VG1703

Robust, miniature precision fiber optic gyroscope

Fiber Optic Gyro VG1703SPE

Ultra-low power, ultra-lightweight, low-cost fiber optic gyroscope

Fiber Optic Gyro VG103S

Robust, reliable and affordable fiber optic gyroscope

Articles

Latest
MostaTech to Highlight Advanced IMUs & FOGs at JNC 2025

MostaTech will showcase its latest compact fiber optic gyroscopes and inertial measurement units at JNC 2025, highlighting its advanced, low-SWaP navigation solutions

May 27, 2025
Malta’s Prime Minister Visits MostaTech’s Advanced Manufacturing Facility

MostaTech showcases its advanced fiber optic gyroscope technology during a visit from Malta’s Prime Minister, highlighting applications in aerospace, marine, and navigation systems

May 09, 2025
MostaTech to Debut Next-Gen Fiber Optic Gyros & Inertial Sensors at XPONENTIAL 2025

MostaTech will introduce groundbreaking fiber optic gyros and IMUs at XPONENTIAL 2025, showcasing innovations in high-speed output, ruggedization, and ultra-compact SWaP optimization

Apr 29, 2025
MostaTech to Launch New Fibre Optic Gyros & IMUs at IEEE INERTIAL 2025

MostaTech is set to unveil its miniature Fiber Optics Gyroscopes (FOGs) and FOG-based Inertial Measurement Units (FOG IMUs) at IEEE INERTIAL 2025

Mar 25, 2025
MostaTech Showcases Enhanced Fiber Optic Gyroscope at XPONENTIAL Europe

MostaTech showcased its upgraded VG2103S-3000 fiber optic gyroscope at XPONENTIAL Europe, featuring enhanced shock resistance, low-noise performance, and extreme durability for demanding environments

Feb 24, 2025
High-Precision Three-Axis FOG from MostaTech to Debut at XPONENTIAL Europe

MostaTech is launching the G321M three-axis Fiber Optic Gyroscope (FOG) at XPONENTIAL Europe, delivering enhanced performance, compact design, and magnetic immunity for SWaP-sensitive applications

Feb 12, 2025
MostaTech Miniaturizes FOG IMUs & Enhances Magnetic Interference Resistance

MostaTech has further miniaturized its U183 and U123D FOG IMUs, responding to increased demand for compact, SWaP-optimized inertial systems for unmanned applications

Nov 12, 2024
Revolutionary Miniature FOG IMUs by MostaTech

MostaTech leverages proprietary in-line technology to set new standards in high accuracy low-SWaP inertial measurement products

Jun 27, 2024
Regional Offices & Locations
MostaTech Ltd Malta F13 Leiden Centre, Mosta Technopark, Mosta MST3000 MALTA + 356 21800 557 Contact Website
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