Method and system for continued vehicle control in an adaptive speed control system at vehicle speeds below a minimum operating speed when a sensed target disappears

摘要

This invention relates to a method and system for continued vehicle control in an adaptive speed control system at a vehicle speed below a minimum operating speed threshold when a sensed target disappears, based on a phantom target generated to compensate for the loss of the sensed target. The method provides for continued vehicle braking at a vehicle speed below a minimum operating speed threshold when a sensed target disappears. The method includes determining whether the vehicle speed is less than the minimum operating speed threshold, determining whether a sensed target has disappeared if the vehicle speed is less than the minimum operating speed threshold, and generating a phantom target having a range and range rate corresponding to a last known range and range rate, respectively, of the sensed target if the sensed target has disappeared. The method further includes controlling the vehicle speed based on the range and range rate of the phantom target.