John Zhao, MathWorks
Car manufacturers, automotive electronics suppliers, and universities are working to develop new electronic systems for advanced driver assistance systems (ADAS). Frequency-modulated continuous waveform (FMCW) radars fit the requirements of automotive active safety systems because of their accurate short-range measurements, low sensitivity to clutter, and easy integration. FMCW radars are widely used as a component of ADAS systems in the automotive industry. The following shows a unique tool chain for modeling and simulating a complete 77 GHz FMCW radar system, including waveform generation, antenna characterization, channel interference and noise, and digital signal processing (DSP) algorithms for range and speed determination. Simulation and modeling of RF impairments such as noise, nonlinearity, and frequency dependencies enable us to test the behavior of “off the shelf” components described with datasheet parameters, and provide information about the performance achievable with a specific component configuration and related costs.