Automotive Radar for the Prevention of Collisions

This paper discusses the general considerations which affect the design of a radar used to provide dependable warnings to avoid collisions. A CW Doppler radar, which incorporates a scheme of RF phase comparison to distinguish opening from closing targets, has been road tested and observations are presented. A proposed system is also described. It utilizes the reflected radar signal from another automobile to control the forward motion of the vehicle upon which it is installed.