DETERMINATION DEVICE, DETERMINATION METHOD AND PROGRAM

The determination device acquires a first distance information measured by a measurement unit and indicating a distance from a movable body to an object, and a second distance information estimated by an estimation unit and indicating the distance from the movable body to the object. Also, the determination device acquires own position accuracy information of the movable body. Then, the determination device determines presence or absence of deviation larger than a predetermined value between a position of the object in map information and the position of the object in real environment, based on a difference value of the distances indicated by the first distance information and the second distance information and the own position accuracy information.