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High-accuracy, intelligent performance with sensor fusion

September 30, 2016  - By

Inertial navigation

geo_fog_single-3d-wThe GEO-FOG 3D inertial navigation system (INS) uses sensor fusion to deliver reliable, high-accuracy navigation and control to a wide variety of unmanned, autonomous and manned aerial, ground, marine and subsurface marine applications and platforms. Other applications include navigation and control, positioning and imaging, georeferencing, land surveying, robotics, underground navigation, stabilization and orientation.

Designed for demanding navigation and control applications, the GEO-FOG 3D has performance monitoring and instability protections to ensure stable and reliable data. Using an innovative artificial intelligence algorithm, its intelligent high-performance filter is capable of extracting significantly more information from the 1750 IMU core processor than a typical Kalman filter.

The GEO-FOG 3D is built upon the high-performance fiber-optic gyro (FOG)-based 1750 inertial measurement unit (IMU). It contains three DSP-1750 fiber optic gyros integrated with three very low noise micro-electro-mechanical systems (MEMS) accelerometers as well as a pressure sensor, a three-axis magnetometer, and a triple-frequency GNSS receiver.

The triple frequency receiver provides 8 millimeters of positioning accuracy and supports all GNSS systems. It also offers data rates up to 1000 Hz; data can be output over a high-speed RS-422 interface or optional RS-232 interface. The rugged GEO-FOG 3D INS is protected from reverse polarity, overvoltage, surges, static and short circuits on all external surfaces.

Key Features

  • Core processor: KVH 1750 IMU
  • 6 degrees of freedom (DoF) IMU consisting of integrated FOGs and accelerometers
  • Triple-frequency Trimble GNSS receiver
  • Sensor fusion algorithm delivers accurate, reliable data for navigation, orientation, and control
  • North-seeking gyrocompass
  • Attitude and Heading Reference System (AHRS)


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