Attitude Heading Reference Systems (AHRS)


  • Overview
  • Specifications
  • Features and Benefits
  • Applications

The 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. The AHRS440 combines highly reliable MEMS sensors (gyros and accelerometers) with low noise magnetometers to provide accurate attitude and heading in a small and rugged environmentally-sealed enclosure. The AHRS440 provides consistent performance in chal­lenging operating environments and is user-configurable for a wide variety of applications.

For customers wishing to use the AHRS440 in analog data acquisition systems, MEMSIC offers the NAV-DAC440 analog interface adapter. The NAV-DAC440 converts the AHRS440 serial digital data to 9-channel BNC analog outputs.

Product Type Standalone
Footprint 7.6 x 9.5
Interface RS-232
Connector Style DSub-15
Heading Accuracy 1
Roll/Pitch Accuracy 0.2
Gyro Range 400
In-Run Stability 20
Non-Linearity 1
Bandwidth 25
Accel Range 10
In-Run Stability 2
Non-Linearity 1
Sensor Bandwidth 25
Mag Field Range 1
Mag Field Accuracy 0.005
  • 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
  • DO-160D Environments
  • Unmanned Vehicle Control
  • Land Vehicle Guidance
  • Avionics Systems
  • Platform Stabilization