Long Range and Ultra-Wideband Short Range Automotive Radar

While radar based comfort systems like autonomous cruise control (ACC) and collision warning are available in many high and mid class models since several years, safety systems like pre-crash sensing, collision mitigation, or collision avoidance are just entering the market. For safety functions short range ultra-wideband radar sensors are used in addition to forward looking long-range radar to extend ACC to stop-and-go operation and to enable further features like pre-crash warning, parking aid, back-up warning, lane change aid, or emergency braking. The contribution will give an overview on automotive radar sensors and applications for novel comfort and safety systems with special emphasis on ultra-wideband short range radar, addressing specifications, design, packaging, and the worldwide frequency regulation situation.