Patent ID: 7786926
Filing Date: 2010-08-31
Classification: B60R,G01S

Abstract:
1. A radar system for motor vehicles, comprising: a radar sensor configured to generate, in a normal operating mode, distance-dependent data and relative-velocity-dependent data, and further configured to generate, in a velocity measurement mode, more precise relative-velocity-dependent data; an evaluation device configured to measure a distance from a vehicle to an object in a surrounding field of the vehicle based on the distance-dependent data, and to measure the relative velocity of the object based on either of the relative-velocity-dependent data and the more precise relative-velocity-dependent data; and a collision detection device, which, based on measured distances and measured relative velocities, recognizes an imminent collision and delivers data on an expected time of collision and an expected impact velocity to a precrash system, wherein the radar sensor is switched by the collision detection device to the velocity measurement mode after recognition of the imminent collision.