Distance coefficient learning apparatus, distance coefficient learning method, and current position calculation apparatus

摘要

A distance factor learning device includes: a first learner that updates a first estimated value for the distance factor and a first parameter, based upon a measurement quantity, which is calculated based upon the vehicle speed pulses and the GPS information, the first estimated value for the distance factor and the first parameter; a second learner that updates a second estimate a value for the distance factor and a second parameter, based upon the measurement quantity, which is calculated based upon the vehicle speed pulses and the GPS information, the second estimated value for the distance factor and the second parameter; a difference calculation unit that calculates a difference between the first estimated value and the second estimated value; and an arithmetic operation control unit that overwrites the first parameter and the first estimated value at the first learner with the second parameter and the second estimated value at the second learner when the difference between the first estimated value and the second estimated value, having been calculated, is equal to or greater than a predetermined value.