1. A method for obstacle detection, the method comprises: transmitting, by a transmitter of a radar, radio frequency (RF) output signals towards a space that comprises potential obstacles; wherein the radar moves in relation to the potential obstacles during the transmitting of the RF output signals; receiving, by a receiver of the radar, input RF signals reflected or scattered from the potential obstacles as a result of the transmitting of the RF output signals; generating, by a radar signal processor of the radar detection information about the input RF signals; and detecting, by the radar or by a computerized system that receives the detection information from the radar obstacles by associating agent behaviors with clusters of input RF signals.