An Inertial Measurement Unit (IMU) is an electronic device that measures and reports acceleration, orientation, angular rates, and other gravitational forces. It is composed of 3 accelerometers, 3 gyroscopes, and depending on the heading requirement – 3 magnetometers. It delivers roll, pitch, and yaw data.
An AHRS adds a central processing unit (CPU) to the IMU. It embeds the Extended Kalman Filter that provides attitude and heading information.
Inertial Navigation Systems (INS) are composed of an IMU and additionally embed a GPS/GNSS receiver. An INS fuses inertial, navigation, and aiding data (odometer, DVL, etc.) thanks to the Extended Kalman Filter. This GNSS and IMU sensor fusion provides roll, pitch, heading, position, and velocity.
At SBG Systems, every inertial sensor is calibrated in temperature from -40 to 85°C, ensuring a consistent behavior in all environments.
Calibration greatly improves sensor quality:
With high quality products and considerate service, we will work together with you to enhance your business and improve the efficiency. Please don't hesitate to contact us to get more details of An attitude and heading reference system, Ericco AHRS.