Monitoring apparatus and method

摘要

A radar (or other apparatus) monitors target objects external to a vehicle and determines whether the target object is a valid target object in dependence on:-(i) A value of a maximum range from the vehicle at which the target object has been detected. (ii) That the target range exceeds a threshold(iii) That the identity of the target remains constant for a threshold time(iv) The range rate of the target being less than the vehicle speed for a threshold time.The apparatus may be operable to pre-arm a braking system in accordance with one set of thresholds and apply a braking system responsive to a determination that a risk of collision exists on the basis of a second set of thresholds.