Attitude Heading Reference System

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An Attitude Heading Reference System ( AHRS ) is a measuring system for determining roll-pitch-yaw angle changes , accelerations and course, in particular for controlling aircraft or aircraft models.

In order to be able to detect rotation, acceleration and position (relative to the magnetic field) for three axes, at least nine individual sensors are required; these are usually gyroscopes , accelerometers, and magnetometers . Additional sensors such as GPS can be used to improve the results .

In contrast to a simple inertial sensor , the raw values ​​of the sensors are already preprocessed (e.g. using Kalman filters ) and made available in an interface that can be queried automatically.