Magnetic data processing device, method, and program

A magnetic data processing method of processing magnetic data to determine an offset thereof, comprising:

• an input process of sequentially receiving magnetic data qi output from a magnetic sensor;
• a storage process of sequentially storing the magnetic data received by the input process;
• and
• an offset derivation process of deriving an offset of the magnetic data according to a probabilistic method using a plurality of the magnetic data stored by the storage process as a statistical population,
• wherein the offset derivation process assumes that an error Δpi contained in each of the plurality of the magnetic data is a random variable vi following a probability distribution μ, and uses an expected value corresponding to the probability distribution μ for deriving the offset.

A machine readable storage medium containing a magnetic data processing program allowing a computer to perform:

• an input process of sequentially receiving magnetic data qi output from a magnetic sensor;
• a storage process of sequentially storing the magnetic data received by the input process;
• and
• an offset derivation process of deriving an offset of the magnetic data according to a probabilistic method using a plurality of the magnetic data stored by the storage process as a statistical population,
• wherein the offset derivation process assumes that an error Δpi contained in each of the plurality of the magnetic data is a random variable vi following a probability distribution μ, and uses an expected value corresponding to the probability distribution μ for deriving the offset.