DRIVER ASSISTANCE APPARATUS

In accordance with an aspect of a driver assistance system includes a radar sensor installed in a vehicle, having a side sensing field of view of the vehicle, and configured to acquire side sensing data; and a controller including a processor configured to process the side sensing data; and the controller may be configured to estimate motion state of a moving object at the side of the vehicle based on applying the side sensing data to at least one of a first estimation model and a second estimation model.