Road safety is a global challenge. Automotive radar pushes a step forward to increase driving comfort, crash prevention and automated driving. 24 GHz, 77 GHz and 79 GHz radar sensors need the capability to distinguish between different objects and offer high range resolution. That is possible with increased signal bandwidth. Radar systems need to cope with interference of many kinds. This application note addresses signal measurements and analysis of automotive radars crucial during the development and verification stages. It also shows a setup to verify the functionality of a radar in case of radio interference.