Milestones in radar and the success story of automotive radar systems

Radio Detection and Ranging (RADAR) is a world wide well-known technique since more than 100 years, which is originally based on the invention of the German engineer Christian Hülsmeyer, who applied his patent at the Kaiserliche Patentamt in Berlin on April the 30^th, 1904. He called his invention Telemobiloskop in a good tradition of using Latin terms for technical subjects. The radar story started with the theoretical work of James Clerk Maxwell, followed by Heinrich Hertz, born in Hamburg, who did all the experimental work to understand the nature of electromagnetic waves. Collision avoidance between ships was the first application for this new technique. Today we come back to the collision avoidance application however now between cars. This is just the beginning of the automotive radar systems success story.