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Study on properties of geomagnetic field for indoor positioning system

This manuscript discusses properties of geomagnetic field for the purpose of performing indoor position estimation. An experiment on spatial change of nearby geomagnetic field around the user is conducted. The user swings around a magnetic sensor with the arm stretched while standing at a same position. The result shows that spatial change of the nearby geomagnetic field can work as identification of that position in a building and it has the potential for performing indoor position estimation method.