From Huelsmeyer´s telemobiloskop to the digital radar

The year 2014 is for all radar engineers and for the international radar society of much importance due to the first radar patent which has been applied 110 years ago on April 30th, 1904 in Berlin at the “Kaiserliche Patentamt”, the former German patent office. The inventor, Christian Huelsmeyer, was interested in collision avoidance systems for ship traffic which was an important economical factor at that time. The TITANIC disaster could have been avoided if the Telemobiliscop technique had been applied to this ship. Starting the development with analogue technique and continuing with digital and semiconductor technology changed the radar system design and the resulting performance totally. The challenge today is to design radars on a single chip.