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The magnetic sensor's magnetic accuracy and the compass's azimuth precision

The magnetic sensor's magnetic accuracy and the compass's azimuth precision

 

When a magnetic sensor precisely measures magnetic fields, the electric compass's azimuth precision is also good.

 

The relationship between the magnetic sensor's magnetic accuracy and the electric compass's azimuth precision is as follows.

 

It is shown by the following formula.

For example,

 

When the horizontal component of the earth's magnetic field is 30μT, assuming a magnetic field measurement's error is ±1μT, the azimuth error would be ±1.9°.

 

※The above formula is such that h, the measurement error with regard to the horizontal component of the earth's magnetic field, is obtained.

  The software offered by Aichi uses a simplified process for measuring azimuth error so it is different from the above formula.