TERMINAL DEVICE

A terminal device includes a communication state obtain unit that obtains a state of wireless communication, a travel locus information generation unit that generates travel locus information, a reference locus information obtain unit that obtains reference locus information, a measurement unit that obtains a position of a movable body along a travel direction based on a matching between the travel locus information and the reference locus information, a mismatch detection unit that detects at least one of (i) mismatch degree between the travel locus information and the reference locus information in the matching, and (ii) a cause of mismatch in the matching, and a filtering unit that filters at least one of the travel locus information and the reference locus information. The measurement unit performs the matching before the filtering, which increases the measurement accuracy of the terminal device.