Highly Accurate Inertial Measurement Units (IMUs)

EMCORE’s Inertial Measurement Units (IMU) feature our advanced Fiber Optic Gyro, Quartz MEMS, and the enhanced reliability and repeatability of our breakthrough Photonic integrated Chip (PIC) technology from the former KVH IMU product family. Proven aboard autonomous platforms worldwide, these non-ITAR IMUs bridge the gaps in satellite navigation with precision data, very high bandwidth, low latency, and low drift. EMCORE’s IMUs provide superior CSWaP (Cost, Size, Weight and Power) compared to competing systems and legacy designs for a wide variety of Aerospace & Defense, and Commercial navigation applications.

EMCORE’s closed-loop and open-loop FOG IMUs deliver high-precision, best-in-class performance compared to competing units and legacy designs. Combined with the strategic-grade FOG Inertial Reference Units (IRU) and IMUs of the former L3Harris Space & Navigation business, and our Systron Donner line of Quartz MEMS IMUs, EMCORE offers a full product suite serving a broad range of requirements from tactical to navigational, and strategic grade.

Outstanding Performance for the Most Demanding Environments and Applications

The new TAC-450-360 inertial measurement unit (IMU) is one of the premier IMUs offered by EMCORE. Designed to deliver the highest level of performance, the non-ITAR TAC-450-360 IMU includes our exclusive photonic integrated chip (PIC) technology. The high-performance TAC-450-360 IMU is designed for applications in which high bandwidth, low latency, and low drift are critical. The TAC-450-360 IMU is integrated with inertial-grade accelerometers and three axes of magnetometers to provide the high accuracy levels that leading autonomous and manned platforms demand.


  • Designed for ease of integration with flexible interface settings and programmable message outputs.
  • Excellent performance in critical applications and the specs that matter most.
  • Improved SWaP plus robust performance and survivability

1750 IMU 1

Versatile, Highly Accurate Photonic FOG-based IMU for Demanding Autonomous and Manned Applications

The new TAC-450-340 inertial measurement unit (IMU) is a versatile, high-performance, non-ITAR IMU featuring photonic integrated chip (PIC) technology for robust performance and survivability. It also offers inertial-grade MEMS accelerometers for excellent performance for autonomous and manned platforms. The TAC-450-340 IMU integrates easily into the most demanding applications including autonomous vehicle navigation and positioning; unmanned aerial surveillance, surveying and mapping; humanoid robots; and oil and gas pipeline inspection equipment.


  • Compact with improved SWaP
  • Your choice of 2g, 10g, 16g and 30g inertial-grade MEMS accelerometers
  • Outstanding resistance to shock and vibration


Affordable, Robust Photonic FOG-based IMU with High-Performance in Challenging Stabilization and Navigation Applications

The new TAC-450-320 inertial measurement unit (IMU) is a dependable, tactical-grade, non-ITAR inertial system that’s also affordable. It features EMCORE’s exclusive photonic integrated chip (PIC) technology for robust performance and survivability and offers inertial-grade MEMS accelerometers for outstanding FOG-based inertial performance as affordable as MEMS alternatives. The TAC-450-320 IMU is ideal for autonomous and unmanned commercial and defence applications, mobile mapping and surveying systems, targeting and pointing systems, and guidance and positioning.


  • Compact and lightweight with high-performance
  • Offered with 16g inertial-grade MEMS accelerometer.
  • Robust performance with high bandwidth

CG 5100

Versatile, Highly Accurate COTS IMU

The versatile, commercial CG-5100 IMU combines proprietary technologies – highly accurate EMCORE FOGs coupled with industry proven MEMS accelerometers – all within a compact single enclosure, providing reliability and long-term compliance to customer specifications. EMCORE’s CG-5100 is a low drift, solid state, FOG-based commercial solution ideally suited for critical sensing applications and GPS-integrated navigation programs. This strap-down inertial subsystem offers:


  • Outstanding reliability and accurate 6-degrees-of-freedom measurement
  • Excellent performance from proprietary algorithms to a fully digital gyro sensor output
  • Convenient, easy-to-adapt output in a fully digital RS-232/RS-422 format.

Cost-Effective, Next-Generation, Strategic-Grade Fiber Optic Gyros

Leveraging over sixty years of experience and proven performance in systems deployed in space, the Compact Inertial Reference Unit for Space (CIRUS) is designed and qualified as the next-generation product of our heritage system. The CIRUS and CIRUS-EX rate sensors deliver two different strategic grades of performance combined with the benefits of a compact, low-cost system in an integral chassis.

Both CIRUS and CIRUS-EX systems feature four Fiber Optic Gyro (FOG) sensors in a fully redundant configuration for spacecraft attitude control, supporting DoD, NASA and commercial missions. The CIRUS and CIRUS-EX are our next generation of IRUs that build on our legacy as the premier supplier of mission-critical precision pointing and navigation systems since the early days of the U.S. space program.


Strategic-Grade Fiber Optic Gyro (FOG) IMU

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 stabilization for missile, space, sensor, ground, air and marine applications. It leverages a long legacy of over 60 years of design, development, and production of inertial components and navigation systems for Space and Defence applications.

The CIRUS-A high-performance FOG IMU design simplifies the optical circuit design, reducing the number of components while providing a significant performance improvement over standard military environments. We have produced and delivered many FOG-based products with strategic-grade performance for a variety of applications.



Ideal for High-Precision Commercial & Industrial Applications

The compact SDC500 Quartz MEMS Inertial Measurement Unit (IMU) meets commercial aerospace, industrial and marine application needs globally. It is available in several performance-cost options ranging in accuracy from precision 1°/hr gyro and 1 mg accelerometer to 20°/hr gyro and 5 mg accelerometer bias over temperature, shock, and vibration environments. This enables customers to select the SDC500 version that meets their specific performance and budget requirements from near tactical grade to high-performance commercial/industrial grade. The SDC500 IMU is constructed with EMCORE’s latest generation quartz gyros, quartz accelerometers, and high-speed signal processing to achieve outstanding precision performance. The SDC500’s breakthrough gyro design retains Quartz MEMS sensitivity and linearity and greatly improves noise immunity.

The small, light, low-power, hermetically sealed SDC500 IMU provides industry-standard serial communication, configurable communications protocols, Time of Validity (TOV) sync, continuous Built-in Test (BIT), electromagnetic interference (EMI) protection, long MTBF and flexible input power compatibility making the SDC500 IMU easy to use in a wide range of challenging applications and operating environments.


Compact, Rugged Tactical Grade MEMS Inertial Measurement Unit

EMCORE’s SDI170 IMU is designed as a performance-compatible inertial system that is form, fit, and functional with a legacy RLG-based IMU product, but with superior overall performance, versatility, and a significantly higher MTBF (Mean Time Before Failure) rating over ruggedized environments. The tactical performance of the SDI170 IMU is based on EMCORE’s mature, proven, dependable and accurate quartz MEMS inertial sensor technology in our SDI500 tactical-grade IMU. EMCORE’s quartz technology enables repeatable high-volume production of precisely machined sensor structures combined with the inherent large signal output and thermal stability of quartz materials.

The SDI170 IMU is designed for demanding, mission-critical, rugged environments and ideal for continuous use applications with no wear-out components, highly linear accelerometer performance and longer life compared to competing alternatives. It is constructed with EMCORE’s latest generation quartz gyros, quartz accelerometers, and high-speed signal processing to achieve outstanding precision performance. The solid-state quartz sensors and hermetically sealed IMU construction provide reliable MTBF and a 20-year operating and storage life. Continuous Built-in Test (BIT), configurable communications protocols, electromagnetic interference (EMI) protection and flexible input power compatibility make the SDI170 IMU easy to use in a wide range of higher order integrated commercial and defence system applications.



Compact, Rugged Tactical Grade MEMS Inertial Measurement Unit

Leveraging industry’s leading MEMS technology to provide previously unheard-of capabilities in angle random walk values (0.02°/√hr.) without loss of tactical grade levels across military environments, including 1°/hr. bias stability, the SDI500 is designed to achieve the demanding performance levels required in sophisticated systems applications. It is particularly suited for use by Integrators and OEMs, packaged in a highly miniaturized, cylindrical configuration with a volume of only 19 cubic inches. Boasting a 20-Year lifetime capability without requiring calibration and a MTBF of more than 25,000 hours, multiple output data formats and SDLC, RS232 and UART output interfaces are provided in this revolutionary IMU for optimized systems protocols.


EN 300

EMCORE has developed the EN-300 Precision Fiber Optic Inertial Measurement Unit as a higher accuracy inertial system to be form, fit and function compatible with a legacy product, but with better performance needed for GPS denied navigation, precise targeting and line-of-sight stabilization. The EMCORE EN-300 is a state-of-the-art design incorporating EMCORE’s proprietary integrated optics devices to enhance performance, providing up to five-times better performance than competing systems. The internal signal processing provides full stand-alone navigation, and as an option can provide standard inertial measurement unit (IMU) delta velocity and delta theta.

The EMCORE EN-300 provides lower noise and greater stability than competing IMUs and is able to statically find North to less than one degree through gyro-compassing. The EN-300’s digital interface is fully programmable within EMCORE’s factory allowing it to directly replace lower performing competing units. It has the same style connector, pinouts and signals as a commonly used FOG IMU from a leading competitor.

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