Attitude Heading Reference Systems (AHRS)

Nine-degree-of-freedom (9DOF) strapdown Attitude Heading Reference systems (AHRS) with Kalman filter & attitude/heading algorithm for accurate roll/pitch/heading in dynamic environments.

Aceinna’s & Memsic inertial systems provide end-users and systems integrators with fully-qualified MEMS-based solutions for measurement of static and dynamic motion in a wide variety of challenging environments including avionics, remotely operated vehicles, agricultural & construction vehicles and automotive test.

Aceinna is a spin-off of Memsic Inc. a world leader in MEMS sensor technology.

Current product offering includes the OpenIMU300ZA and AHRS440.


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The Memsic AHRS440 is a compact standalone attitude and heading reference system that provides roll, pitch and yaw measurement data in both static and dynamic environments. The AHRS440 can accept external GPS aiding inputs for optimized performance, and is available in standard and high range sensor configurations

Key Features:

  • Roll, Pitch, Heading and 9DOF Inertial Outputs
  • Accuracy < 0.2 deg
  • Output Data Rate > 100 Hz
  • High-Range Sensor Options (400 deg/sec and 10g)
  • GPS Aiding Input
  • Low Power < 3W
  • High Reliability, MTBF > 25,000 hours
  • Analog Output Option
  • Rugged Sealed Enclosure