Position measuring device and method

A position measuring device comprising:

• a first sensor, configured to measure acceleration or angular velocity of a measurement target;
• a position information generation part, configured to integrate the acceleration or the angular velocity with respect to time and convert the acceleration or the angular velocity into position information;
• a second sensor, configured to detect mechanical vibration generated in association with movement of the measurement target;
• a reference position specification part, configured to pre-store, as reference position information, position information of the measurement target when vibration is detected by the second sensor;
• and
• a calibration processing part, configured to, in response to detection of vibration by the second sensor, execute calibration processing to reduce position measurement errors based on the position information obtained by the position information generation part as well as the reference position information.