Why Magnetometer Is Important?

Magnetometers are widely used for measuring the Earth's magnetic field, in geophysical surveys, to detect magnetic anomalies of various types, and to determine the dipole moment of magnetic materials.

Is a magnetometer necessary?

If gravity is allowed to affect the needle's performance then the effect of gravity will become a component of the measurement. This is the reason why magnetometers are used for measuring heading. The magnetometer is therefore an instrument for measuring both the strength and direction of magnetic fields.

What information does the magnetometer provide?

Magnetometer. Since the accelerometer can only measure pitch & roll, a magnetometer provides an AHRS with a measurement of yaw by comparing the measurement of the magnetic field surrounding the system to Earth's magnetic field, just like a traditional magnetic compass.