NAVIGATION MESSAGE RECEPTION DEVICE

摘要

Provided is a navigation message reception device for deciding whether navigation messages from space satellites used in a satellite positioning system are legitimate. In a navigation message reception device according to one aspect, when it is determined that there is continuity between a navigation message newly received by a satellite receiver (230) from a space satellite which is the sender of a navigation message that has been successfully authenticated through communication with an authentication center (120), and a navigation message that has previously been successfully authenticated through communication with the authentication center (120), it is decided that the newly received message is legitimate.