In recent years automotive safety has become more and more important due to the high numbers of fatal accidents. The trend is to automate and enhance the safety technologies in order to assist the driver and avoid dangerous situations. Advanced Driver-Assistance Systems (ADAS) can implement various features such as automatic emergency brake, blind-spot detection, automated highway driving and more. ADAS are based on radar technology since it can effectively detect and locate objects without being affected by low visibility or by bad weather conditions. The most common type of radar for automotive applications adopts linear frequency-modulated continuous waveform and it provides range, velocity and direction of arrival of the detected targets.