Method to Improve Range and Velocity Error using De-interleaving and Frequency Interpolation for Automotive FMCW Radars

Abstract

In the paper, we propose method to obtain the range and velocity with improved error depending on each distance (long, middle, and short) of the target for the automotive Frequency Modulation Continuous Wave (FMCW) radars. While target is in the long distance, the range and velocity are roughly extracted, for near-range target with the high collision probability, the de-interleaved method in the time domain and frequency interpolation in the frequency domain are applied to obtain more accurate range and velocity.