Back to results
US 2003/0201878 A1Published application
Automotive radar system
AssigneeHitachi, Ltd. and Hitachi Car Engineering Co., Ltd.
InventorsJie Bai, Hiroshi Kuroda
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeHitachi, Ltd. and Hitachi Car Engineering Co., Ltd.
InventorsJie Bai, Hiroshi Kuroda
Estimating the term…
The invention provides a radar system, which can increase a crossrange detection speed in the lane change state by employing a steering angle sensor, etc. loaded on a vehicle without providing additional hardware. A lane-change determining unit receives a yaw rate response from a steering angle sensor, etc., and determines whether the radar-loaded vehicle is in the steering operation for lane change. If the radar-loaded vehicle is in the lane change state, a gain setting unit shifts a tracker gain to a larger value than that in ordinary running, and calculates a range, a crossrange, a relative velocity, etc. relative to a target from the results of tracker processing executed by a filtering unit. By using the calculated range, crossrange, relative velocity, etc., a control determining unit determines whether there is a collision risk, and whether steering operation to avoid a collision is required. If there is a collision risk, a forward collision warning and a control signal for actuating automatic braking are issued. If automatic steering to avoid a collision is required, an automatic steering control signal is issued. When the lane change state is completed, the radar system is returned to the state employing a tracker gain for the ordinary running.
An automotive radar system for detecting at least one of a range, a crossrange, an azimuth and a relative velocity relative to a target, the system comprising:
An automotive radar system for detecting at least one of a range, a crossrange, an azimuth and a relative velocity relative to a target, the system comprising:
An automotive radar system for detecting at least one of a range, a crossrange, an azimuth and a relative velocity relative to a target, the system comprising:
An automotive radar system for detecting at least one of a range, a crossrange, an azimuth. and a relative velocity relative to a target, the system comprising:
Dependencies are inferred from the claim text.