Abstract
Smart and powerful radar sensors for automotive applications require extremely high performance figures in measurement accuracy and resolution. A real technical challenge in this case is the simultaneous range, azimuth angle and velocity measurement, even in multiple target situations. These general requirements reflect especially the waveform design and azimuth measurement technique. Powerful automotive radar systems are currently under development or in a research stage for various applications, like Adaptive Cruise Control (ACC) that are already introduced into the market (e.g. Mercedes S class, Volkswagen Phaeton or Audi A8), stop-and go, driver assistance and even pre-crash systems. Linear frequency modulated continuous wave (LFMCW) radar sensors have the advantages of high resolution features in range and radial velocity but need a long measurement time. Therefore, some new intertwined waveforms, like FSK or combinations between FSK and FMCW will be discussed in detail to demonstrate the technical differences and advantages.
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