Radar means radio detection and ranging. A radar detects objects via electromagnetic or radio waves. The radar can not only measure the distance, but also the angle and the relative speed of moving objects to the target object. The electromagnetic waves generated by the radar transmitter travel at the speed of light to the target object, where they are reflected. The radar receiver—usually the transmitter and receiver antennas are located on the same radar chip—processes and analyzes the signal to determine, depending on the type of radar, the distance, speed and position of the object.