Accelerometer for AHRS application

Introduction

Inertial navigation is the process of calculating the position and velocity of a body (such as an aircraft) from self-contained accelerometers and gyroscopes. Attitude and Heading Reference Systems, better known as AHRS, are multi-axis sensors that provide heading, attitude and yaw information for aircraft or any subject moving in free space.

AHRS are designed to replace traditional mechanical gyroscopic flight instruments and provide superior reliability and accuracy. They consist of either solid-state or MEMS gyroscopes, accelerometers and magnetometers on all three axes. Some AHRS use GPS receivers to improve long-term stability of the gyroscopes. A Kalman filter is typically used to compute the solution from these multiple sources.

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