History of automotive anticollision radars and final experimental results of a MM-wave car radar developed by the Technical University of Munich

The history of development of automotive radars in different countries since 1972 is described using a short comparison of radar types in Table 2, on page 17. Table 1, next page, indicates the planning of introduction of car radars in the near future according to information supplied by car companies. The purpose of the development of an automotive radar in our university was to test different signal processing procedures both for distance and Doppler evaluation and also for a digital wavefront reconstruction to find out the angle position of a target. The block diagram, the main properties, the technical data of the radar system, the used antennas and the multiplexing of two transmitting antennas is described in the following. Finally some experimental results have been obtained under real traffic conditions.