Abstract: 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.

Abstract: A radar device derives, plurality of parameters according to a target and target detection distances, based of received signals that are acquired by receiving reflected waves, each of which is a radar transmission wave transmitted toward vicinity of an own vehicle and then reflected from the target existing in the vicinity. The radar device computes, from likelihood models in which first and second already-known correlations are modeled for each of the detection distances, an indicator based on likelihood ratios, which correspond to derived parameters and detection distances, of a stationary vehicle and upper object, in which the first already-known correlations correlate parameters and likelihoods of the stationary vehicle with each other and second already-known correlations correlate the parameters and likelihoods of the upper object with each other. The radar device performs a threshold determination on the computed indicators to determine whether the target is the stationary vehicle or upper object.

Abstract: A radar device includes a signal processing unit and a target information output unit. The target information output unit outputs only pair data having addition reliability equal to or larger than a threshold to the outside of the radar device as target information. The signal processing unit determines whether a first target and a second target belong to the same object. The first target is pair data derived later than the second target. If it is determined that the first target and the second target belong to the same object, the signal processing unit transfers reliability of the second target to the first target.

Abstract: 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.

Abstract: A radar device derives, plurality of parameters according to a target and target detection distances, based of received signals that are acquired by receiving reflected waves, each of which is a radar transmission wave transmitted toward vicinity of an own vehicle and then reflected from the target existing in the vicinity. The radar device computes, from likelihood models in which first and second already-known correlations are modeled for each of the detection distances, an indicator based on likelihood ratios, which correspond to derived parameters and detection distances, of a stationary vehicle and upper object, in which the first already-known correlations correlate parameters and likelihoods of the stationary vehicle with each other and second already-known correlations correlate the parameters and likelihoods of the upper object with each other. The radar device performs a threshold determination on the computed indicators to determine whether the target is the stationary vehicle or upper object.

Abstract: A radar device includes a signal processing unit and a target information output unit. The target information output unit outputs only pair data having addition reliability equal to or larger than a threshold to the outside of the radar device as target information. The signal processing unit determines whether a first target and a second target belong to the same object. The first target is pair data derived later than the second target. If it is determined that the first target and the second target belong to the same object, the signal processing unit transfers reliability of the second target to the first target.

Abstract: A radar device according to the embodiments includes a deriving unit and a determining unit. The deriving unit derives, based on a received signal acquired by receiving a reflected wave obtained by reflecting a radar transmission wave transmitted to a periphery of an own vehicle on a target located on the periphery, a parameter related to the target and a detection distance of the target. The determining unit determines, from a given characteristic of the parameter and the parameter and the detection distance derived by the deriving unit, whether the target existing in a traveling direction of the own vehicle is a target that collides with the own vehicle when the own vehicle advances in the traveling direction or a target that does not collide with the own vehicle when the own vehicle advances in the traveling direction.