摘要:
A body detection apparatus includes: movement direction calculation portion that calculates a movement direction of each of acquisition points by using signals that show the acquisition points and that are obtained through detection of a body present around the vehicle; and determination portion that pre-sets a frame commensurate with a shape of a body as a detection object, and for pre-setting for the frame a reference traveling direction as an assumed traveling direction of the body, and for determining, among the acquisition points, acquisition points present within the frame whose reference traveling direction is aligned with the movement direction as being acquisition points of a single body.
摘要:
The present invention provides a radar apparatus capable of changing a characteristic of filter processing while considering also a relative velocity of an object. A measurement section measures a relative position and a relative velocity of an object such as another vehicle, a pedestrian, and an object placed on a road. The radar apparatus calculates a time until the object and an own vehicle collide with each other, based on the relative position and relative velocity of the object measured by the measurement section, and changes, based on the calculated time, a filter coefficient to be used when filter processing is performed on a measured position converted from the measured relative position of the object, thereby changing a characteristic of the filter processing to be performed on the measured position, between stability and responsiveness.
摘要:
A target position is estimated in such a manner to maintain target position continuity, with high accuracy, even when the X coordinate displacement of the target is large. On a scan in which the target position is not detected, when a trajectory of the target in the past is within a predetermined region in the vicinity of the Y-axis, a position for estimate is a position having an X coordinate resulting from shifting, by a first displacement, the X coordinate estimated according to the trajectory, on a basis of the X coordinate of a previous position, while when the trajectory is not within the predetermined region, the position for estimate is a position having an X coordinate resulting from shifting, by a second displacement that is larger than the first displacement, the X coordinate estimated according to the trajectory, on a basis of the X coordinate of a previous position.
摘要:
Provided is a travel route estimation device capable of accurately estimating, without excessively increasing communication load of the device, a shape of a travel route even when one's own-vehicle is traveling on a travel route that does not have any objects installed on the route. A calculation section calculates and successively stores a radius of curvature of the travel route based on a yaw rate detected by a yaw rate detection section and on a traveling velocity detected by a velocity detection section. When conducting a filtering process for reducing variation of the calculate radius of curvature, the calculation section selects a filtering constant for multiplying the stored radius of curvature in accordance with the type of the travel route of the own-vehicle, and generates information representing a radius of curvature obtained by conducting at least one filtering process by using the selected filtering constant.
摘要:
Provided is a radar system which calculates a track of a detected object and can determine whether or not the track is accurate. The radar system includes: a radar section for emitting an electromagnetic wave to an object and receiving a reflected wave reflected from the object to detect position information of the object; a track calculation section for calculating, periodically at a first cycle, a track along which the object moves, on the basis of the position information obtained from the radar section; a first speed calculation section for calculating a first speed at which the object moves, on the basis of pieces of the position information at two different time points having a time interval which is longer than the first cycle; and a track determination section for determining whether or not the track is accurate, on the basis of at least the first speed.
摘要:
Provided is a radar system which calculates a track of a detected object and can determine whether or not the track is accurate. The radar system includes: a radar section for emitting an electromagnetic wave to an object and receiving a reflected wave reflected from the object to detect position information of the object; a track calculation section for calculating, periodically at a first cycle, a track along which the object moves, on the basis of the position information obtained from the radar section; a first speed calculation section for calculating a first speed at which the object moves, on the basis of pieces of the position information at two different time points having a time interval which is longer than the first cycle; and a track determination section for determining whether or not the track is accurate, on the basis of at least the first speed.
摘要:
Provided is an object detection apparatus and an object detecting method for, with respect to an object detected by a radar, determining whether the object is an automobile and performing an appropriate collision determination based on a determination result. The apparatus comprises a radar device 1 which detects a target in a surrounding area of an own vehicle VM; a target processing section 21 which calculates, with respect to the detected target, information containing at least two of information indicating a position of presence, information indicating a moving direction, and information indicating a moving speed, of the target as target information; and a target determination section 23 which determines, based on the calculated target information, whether a target object is a bicycle depending on whether the target satisfies a predetermined condition, and which determines a risk of collision between the vehicle VM and the target object.
摘要:
Provided is an object detection apparatus capable of accurately estimating the movement amount of the position, which moves within an oncoming vehicle, of a reflection point of an electromagnetic wave radiated from a radar apparatus, and using the movement amount for collision possibility determination. The object detection apparatus provided in a vehicle includes: a relative position detection section radiating the electromagnetic wave to an object in front of the vehicle, and receiving a reflection wave from the object, thereby detecting the relative position, to the vehicle, of an electromagnetic wave reflection point on the object reflecting the electromagnetic wave; and a movement amount estimation section capable of, based on the relative position to the vehicle of the electromagnetic wave reflection point, estimating, as continuous values, a movement amount of the electromagnetic wave reflection point on the object from a predetermined timing until the object approaches the vicinity of the vehicle.
摘要:
Objects relatively approaching a vehicle diagonally are detected, and at least relative distances of the detected objects with respect to the vehicle and relative speeds of the detected objects with respect to the vehicle are calculated. Using the relative distances of the objects and the relative speeds of the objects, estimated collision time lengths to collisions of the objects with the vehicle are calculated respectively. A predetermined number of the objects that are arranged in an ascending order of the estimated collision time lengths are selected, and pieces of detected information on the selected objects are output.
摘要:
There is provided a traveling direction vector reliability determination method in which reliability of a traveling direction vector of another vehicle is calculated so as to increase reliability of a collision prediction. The traveling direction vector reliability determination method determines the reliability of the traveling direction vector when the traveling direction vector is calculated based on position coordinate points of a target, which are calculated by a radar device. The method includes a traveling direction vector calculation step of calculating, based on a movement history of the position coordinate points, the traveling direction vector of the target; and a reliability calculation step of calculating, in a case where the position coordinate points include normally recognized coordinate points and estimated coordinate points, the reliability of the traveling direction vector, based on at least one of information about the normally recognized coordinate points and information about the estimated coordinate points.