Rugged, Highly Accurate INS and AHRS with Embedded GNSS

Commercial Fiber Optic Gyro (FOG)-based Inertial Navigation Systems ​
  • Precision navigation and positioning even when GNSS is unavailable
  • Compact, high-performance INS designed for demanding navigation and control applications
  • Data rates 10x faster than competing systems 
  • Core processor is KVH’s landmark 1750 IMU
  • Developer kit available 
GEO•FOG 3D INS DatasheetGEO•FOG 3D Dual INS Datasheet

Highlights & Specifications

Product Video

Product Video:

GEO-FOG 3D FOG-based inertial navigation systems

Highly Accurate Inertial Performance

  • Six degrees of freedom (DoF) IMU with integrated high-performance FOGs and accelerometers
  • Innovative sensor fusion algorithm extracts more data than typical Kalman filters
  • North-seeking gyrocompass
  • Attitude and Heading Reference System (AHRS)
  • Embedded Trimble GNSS receiver 

Designed for Critical Control Applications

  • Embedded GNSS includes Receiver Autonomous Integrity Monitoring (RAIM) to assess signal integrity
  • Contains triple or dual frequency GNSS receiver (depending on single or dual antenna variant)
  • Provides up to 8 mm positioning accuracy
  • Future-proofed – supports GPS, GLONASS, GALILEO & BieDou


  • Navigation in GNSS-denied environments (underground, subsea)
  • Navigation and control
  • Manned, unmanned, and autonomous systems
  • Robotics
  • AHRS
  • Positioning and imaging
  • Georeferencing
  • Surveying
  • Stabilization and orientation
North-seeking Gyrocompass Inertial Navigation

Navigation in GNSS-denied environments is a challenge for small, low-cost unmanned vehicles such as those used for research, exploration, infrastructure monitoring, security monitoring and more. This paper by the Department of Mechanical Engineering of Johns Hopkins University evaluates a commercial north-seeking gyrocompass system built with a high-performance KVH inertial measurement unit (IMU) similar to the IMU core processor of the GEO-FOG 3D INS.

White Paper

Preliminary Results with a Low-Cost Fiber-Optic Gyrocompass System

Get the White Paper
See More ProductsNext Product: CNS-5000 INS