Patent attributes
A radar device includes: a deriving unit configured to derive detection distances of a target existing in an area near a vehicle equipped with the radar device, based on reception signals acquired by transmitting a radar transmission wave to the area near the vehicle and receiving a reflected wave from the target; an acquiring unit configured to acquire a distance at which a maximum value of reception powers was detected, and a distance at which a minimum value of the reception powers was detected, among the detection distances sequentially derived by the deriving unit; and a determining unit configured to determine whether the target is an upper object which will not collide with the vehicle, based on the distances acquired by the acquiring unit.